Numbers and Counting
Kosakata Dasar Bahasa Inggris - Bagian 3 · 50 pelajaran
What does “Digit Grouping” mean?
A is correct because digit grouping is specifically designed to break up long numbers into smaller chunks (like writing 1,000,000 instead of 1000000), making them easier to read and compare at a glance.
B is wrong because it says digit grouping makes numbers *harder* to read—the opposite of the actual purpose. Grouping digits always improves readability, not worsens it.
What does “Counting Principle” mean?
Correct Answer (A): The Counting Principle is about *calculating* or *finding* the total number of possible outcomes in a situation. It's a tool that helps you figure out "how many ways" something can happen—like if you have 3 shirts and 2 pants, there are 3 × 2 = 6 possible outfits.
Why B is wrong: Option B says the principle "limits" or "restricts" the number of outcomes, but that's backwards. The Counting Principle doesn't reduce possibilities—it *counts* them. Restrictions would come from other factors, not from the principle itself.
What does “Digit Place” mean?
Correct Answer (A): Digit place refers to the position of a digit within a number that determines its value. For example, in the number 523, the digit 5 is in the hundreds place, so it's worth 500—not 5. The position (place) directly shows what value that digit contributes.
Why B is wrong: Option B says the position "eliminates" or "cancels out" the digit's value, which is backwards. The position is exactly what *gives* the digit its value, not what removes it.
What does “Even Count” mean?
Correct Answer (A): "Even Count" refers to numbers that can be divided by 2 with no remainder. Examples: 2, 4, 6, 8, 10. These are called "even numbers."
Why B is wrong: Option B describes odd numbers (numbers that *cannot* be divided by 2), which is the opposite of even numbers. Odd numbers like 1, 3, 5, 7 leave a remainder when divided by 2.
What does “Unit Increment” mean?
Correct Answer: Peningkatan satu unit (Unit Increase)
"Unit Increment" means to increase by one single unit—so "Peningkatan satu unit" is correct.
Why the other option is wrong:
- Penurunan satu unit means "decrease by one unit," which is the opposite. The word "increment" specifically means to add or go up, not down.
What does “Number Pair” mean?
Correct Answer (A): "Dua angka yang digabungkan bersama" (Two numbers combined together)
A "number pair" means two numbers that go together as a unit—like (3, 5) or (2, 8). They're linked or grouped, not separate.
Why B is wrong: "Dipisahkan satu sama lain" means "separated from each other." A number pair is the opposite—the numbers are connected and work as a team, not apart.
What does “Single Unit” mean?
Correct Answer: A
"Single Unit" means one individual thing that cannot be separated. This is the literal definition—"single" = one, "unit" = an individual item or entity.
Why B is wrong:
Option B describes "multiple entities that can be divided," which is the opposite of a single unit. A single unit is by definition just *one* thing that stands alone.
What does “Double Unit” mean?
Correct Answer (A): "Dua entitas atau item yang tak terpisahkan"
- "Double" means two, so "Double Unit" refers to two entities or items that function as one inseparable whole. This is the literal and correct meaning.
Why B is wrong:
- Option B says "one entity" (satu), which contradicts "double" (meaning two). A single unit would just be called a "unit," not a "double unit."
What does “Triple Unit” mean?
Correct Answer (A): "Triple" means three, so "Triple Unit" refers to three entities or items that function together as one inseparable whole. The word "triple" is the key—it always indicates the number three.
Why B is wrong: Option B says "one entity or item," which contradicts the meaning of "triple." If it were just one unit, it would be called a "Single Unit," not a "Triple Unit." The prefix "tri-" always means three (like tricycle, triangle, or tripod).
What does “Quadruple Unit” mean?
Correct Answer (A): Empat entitas atau item yang tak terpisahkan (Four inseparable entities or items)
The prefix "quadruple" means four, so a quadruple unit refers to four things grouped together as one whole. This is the accurate definition.
Why B is wrong:
Option B says "one entity" (Satu entitas), which directly contradicts the meaning of "quadruple." The word would describe a "single unit," not a "quadruple unit."
What does “Round-Off Number” mean?
Correct Answer (A): "Round-off number" means reducing a number to a shorter, simpler form—like turning 3.7 into 4, or 156 into 160. This makes numbers easier to work with and understand.
Why B is wrong: Option B describes the *opposite* of rounding. Expanding a number into a longer or more complex format is not what rounding does; rounding simplifies, not complicates.
What does “Counting System” mean?
Correct Answer (A): A counting system is fundamentally about organizing and representing numbers or objects in a *regular, systematic way*. Examples like binary, decimal, or Roman numerals all follow consistent rules to show quantities.
Why B is wrong: The word "mengacaukan" means "to confuse" or "to jumble"—the opposite of what a counting system does. Counting systems are designed to make representation *clear and organized*, not chaotic.
What does “Number Theory” mean?
Correct Answer (A): Number Theory is the branch of mathematics focused on studying properties and relationships of numbers—like divisibility, prime numbers, and patterns. This is the accurate definition.
Why B is wrong: It says number theory *ignores* properties and relationships of numbers, which is the opposite of what it actually does. Number theory is fundamentally about exploring and understanding these exact properties.
What does “Number Chart” mean?
Correct Answer (A): A number chart is a tool designed to organize and sort numbers in a visual format—like a table, graph, or grid. This helps you see patterns, compare values, and understand data more easily.
Why B is wrong: It describes a tool for "ruining and disrupting the order of numbers," which is the opposite of what a chart does. Charts are meant to create order and clarity, not confusion.
What does “Zero Property” mean?
Why A is correct:
The Zero Property states that any number multiplied by zero equals zero. This is a fundamental rule in mathematics—5 × 0 = 0, 100 × 0 = 0, etc.
Why B is wrong:
This describes the Identity Property of Multiplication (where any number multiplied by 1 equals itself), not the Zero Property. When you multiply by zero, you always get zero, not the original number back.
What does “Tens Place” mean?
Correct Answer (A):
The tens place is to the left of the ones place. In the number 24, the 2 is in the tens place (worth 2 × 10 = 20), and the 4 is in the ones place (worth 4 × 1 = 4).
Why B is wrong:
Option B says the tens place is to the right of the ones place, which is backwards. The place values increase as you move left, not right. Going right takes you to smaller values (like decimals), not tens.
What does “Hundreds Place” mean?
Why A is correct:
The hundreds place is always two positions to the *left* of the decimal point. It represents values that are multiples of 100 (like 200, 500, 800). For example, in 345.67, the 3 is in the hundreds place.
Why B is wrong:
Two places to the *right* of the decimal is the hundredths place (not hundreds place)—it represents fractions like 0.01, 0.05, etc. This is a completely different concept; the direction matters!
What does “Jump Strategy” mean?
Correct Answer (A): "Jump Strategy" literally means making "jumps" (loncatan) on a number line. You start at one number and jump forward or backward in chunks to reach your answer—this is an efficient mental math technique.
Why B is wrong: It says "statis" (static/staying still) instead of "loncatan" (jumps). Jump Strategy is all about movement and jumps on the number line, not staying in one place. A static approach wouldn't help you solve problems by moving along the number line.
What does “Doubling Numbers” mean?
Correct Answer (A): Proses penambahan angka dengan dirinya sendiri
- "Doubling" means multiplying by 2, which is the same as adding a number to itself. For example, doubling 5 means 5 + 5 = 10.
Why B is wrong:
- Option B describes subtraction (pengurangan), not doubling. Subtracting a number from itself always gives zero, which has nothing to do with doubling.
What does “Halving Numbers” mean?
Correct Answer: Proses pembagian angka dengan dua (Dividing a number by two)
- "Halving" means cutting something in half, so you divide by 2. For example, halving 10 gives you 5.
- Option B is wrong because multiplying by 2 does the opposite—it doubles the number, not halves it.
What does “Sequential Calculation” mean?
Correct Answer (A): Metode pemecahan masalah secara berurutan
- "Sequential" means "in order" or "step-by-step," so sequential calculation means solving problems in a logical order, one step after another.
Why B is wrong:
- "Acak" means "random," which is the opposite of sequential—random solving doesn't follow a planned order.
What does “Unit Value” mean?
Correct Answer (A): Pengukuran nilai dari sesuatu dalam istilah standar.
Unit value means measuring the worth or price of something using a standard measurement—like price per kilogram, cost per item, or value per unit. This lets you compare things fairly.
Why B is wrong:
Option B says "measurement of value that doesn't exist" (nilai yang tidak ada)—this contradicts what unit value actually is. Unit value is a real, measurable calculation, not something non-existent.
What does “Parallel Digits” mean?
Correct Answer (A): "Angka yang berada di sepanjang garis atau arah yang sama"
"Parallel" means lines or objects that go in the same direction and never meet. So parallel digits are digits positioned along the same line or direction—they move together.
Why B is wrong:
Option B says digits along *different* lines or directions, which describes the opposite of parallel. That would be "perpendicular" or "intersecting," not parallel.
What does “Amplitude Representation” mean?
Correct Answer (A): Penggambaran dari variasi dalam sistem fisik (Representation of variation in a physical system)
- Amplitude specifically measures how much something *varies* or *changes*—like how far a wave swings from its center point. This variation is the core meaning of amplitude.
Why B is wrong:
- "Ketiadaan variasi" means "absence of variation"—the opposite of what amplitude represents. If there's no variation, there's no amplitude (it would be zero).
What does “Bisection Calculation” mean?
Correct Answer (A): "Bisection" comes from "bi" (two) + "section" (cut/divide). It means splitting something into two equal or congruent parts—this is the literal definition used in math, geometry, and other fields.
Why B is wrong: This describes *combining* or *joining* two parts together, which is the opposite of bisection. Bisection is about dividing, not uniting.
What does “Ascending Sequence” mean?
Correct Answer (A): "Ascending" means going up or increasing. So an ascending sequence has each number getting larger than the one before it—like 2, 5, 8, 11. This matches the definition exactly.
Wrong Answer (B): This describes a *descending* sequence, where numbers get smaller (like 11, 8, 5, 2). That's the opposite of ascending.
What does “Descending Sequence” mean?
Correct Answer (A): "Descending" means going down, so each number gets smaller. Example: 10, 8, 6, 4, 2.
Why B is wrong: That describes an *ascending* sequence (going up), not descending. Each number being larger is the opposite of what we want.
What does “Mixed Fraction” mean?
Correct Answer (A): A mixed fraction combines a whole number with a proper fraction (where the numerator is smaller than the denominator). Example: 2¾ has the whole number 2 and the proper fraction ¾.
Why B is wrong: Option B describes only whole numbers, not fractions at all. A mixed fraction must include both parts—a whole number AND a fractional part—to be considered "mixed."
What does “Proportional Division” mean?
Correct Answer (A): "Proportional Division" means splitting something into parts according to a specific ratio or proportion. For example, dividing $100 in the ratio 2:3 means one person gets $40 and the other gets $60—each part is proportional to the ratio.
Why B is wrong: Option B describes combining or merging parts without considering ratios or proportions—this is the opposite of proportional division. Proportional division specifically *requires* following a ratio, not ignoring it.
What does “Unity Increment” mean?
Correct Answer: A
"Unity Increment" means adding or increasing by one unit at a time. The word "increment" specifically means to add or increase, so a unity increment is a small, single-unit increase.
Why B is wrong:
Option B describes a *decrease* or reduction, which is the opposite of an increment. That would be "decrement," not increment.
What does “Reciprocal Numbers” mean?
A is correct: Reciprocal numbers are pairs of numbers that multiply together to equal 1. For example, 2 and 1/2 are reciprocals because 2 × 1/2 = 1. This is the definition of reciprocals.
B is wrong: This option says numbers that multiply to give a result OTHER than one—that's the opposite of what reciprocals are. Any two numbers multiplying to something other than 1 are just regular number pairs, not reciprocals.
What does “Number Bonds” mean?
Correct Answer (A): Number bonds show how a larger number breaks into smaller parts that add together. For example, 5 can be a "bond" of 3 + 2. This is a foundational concept in early math that helps children understand how numbers relate to each other.
Why B is wrong: Calculus is advanced mathematics involving rates of change and isn't related to number bonds at all. Number bonds are simple addition relationships, not complex calculus operations. Also, number bonds always depend on a specific number—they don't exist independently.
What does “Skip Counting” mean?
Correct Answer (A):
Skip counting means intentionally leaving out numbers in a regular pattern—like counting by 2s (2, 4, 6, 8) or by 5s (5, 10, 15, 20). You "skip over" the numbers in between, following a consistent rule.
Why B is wrong:
Option B describes counting every single number without skipping anything (1, 2, 3, 4, 5...), which is the opposite of skip counting. This is just regular counting, not skip counting.
What does “Tens Complement” mean?
# Tens Complement Explanation
Correct Answer (A): This is right because "tens complement" means finding what you need to *add* to a number to reach the next ten. For example, the tens complement of 7 is 3 (because 7 + 3 = 10).
Why B is wrong: This describes subtraction to reach the *previous* ten, which is not what tens complement means. That would be going backwards, not forward to the next ten.
What does “Ones Place” mean?
Why A is correct:
The ones place is always the rightmost digit in a number. It represents single units (1, 2, 3, etc.). For example, in 47, the 7 is in the ones place and means 7 individual units.
Why B is wrong:
This describes the thousands place, not the ones place. The thousands place is on the *left* side of a number and represents groups of 1,000. For example, in 5,000, the 5 is in the thousands place.
What does “Thousands Place” mean?
A is correct: The thousands place is the digit position that represents how many thousands are in a number. For example, in 5,234, the digit 5 is in the thousands place and represents 5,000.
B is incorrect: This describes the ones (or units) place, not the thousands place. The ones place shows individual units, like the 4 in 5,234.
What does “Millions Place” mean?
Correct Answer (A): "Millions Place" refers to the digit position that represents millions. In the number 5,234,678, the 5 is in the millions place because it stands for 5 million (5 × 1,000,000).
Why B is wrong: Option B describes the "ones place" or "units place," which is the rightmost digit representing single units. This is completely different from the millions place, which is much further to the left in a number.
What does “Billion Place” mean?
Correct Answer (A): "Billion Place" refers to the place value position that represents billions (1,000,000,000). When a digit is in the billion place, it tells you how many groups of one billion are in that number.
Why B is wrong: Option B describes the "ones place" or "units place," which represents single units (1), not billions. This is the opposite end of the place value scale—billions are much larger than ones.
What does “Estimation” mean?
Correct Answer (A): Estimation means making a *rough* or approximate calculation—not an exact one. It's about getting a reasonable idea of a value quickly, like guessing how many people are in a crowd or roughly how much something costs.
Why B is wrong: Option B says "exact" (tepat), which is the opposite of estimation. Exact calculations are precise measurements, not estimates. Estimation is specifically for rough approximations.
What does “Palindrome Number” mean?
Correct Answer (A):
A palindrome number reads the same forwards and backwards. For example, 121 reversed is still 121, and 1331 reversed is still 1331. The key word is "tetap sama" (remains the same).
Why B is wrong:
Option B says the number *changes* when its digits are reversed ("berubah ketika"), which is the opposite of what a palindrome is. Most numbers change when reversed (like 123 becomes 321), but palindromes specifically don't.
What does “Counting On” mean?
# Explanation
Correct Answer (A): "Counting On" is an addition strategy where you start at one number and count upward to find the sum. For example, to add 5 + 3, you start at 5 and count up: 6, 7, 8—so the answer is 8.
Why B is wrong: That describes counting *down*, which is a subtraction strategy, not addition. "Counting On" specifically means moving forward/upward on the number line to add, not backward to subtract.
What does “Numeric Equivalent” mean?
Correct Answer (A): A numeric equivalent is a value that represents a specific number in a different form. For example, 1/2 and 0.5 are numeric equivalents—they're the same value shown as a fraction and a decimal. The key word is "represents" (mewakili), meaning it accurately shows the same quantity.
Why B is wrong: Option B says the value "hides or misrepresents" (menyembunyikan atau salah merepresentasikan) the number. That's the opposite of what an equivalent does—it should accurately represent the same value, not distort it.
What does “Interger Representation” mean?
# Explanation
Correct Answer (A): Penggambaran nomor dalam bilangan bulat ✓
- "Interger Representation" means how integers are displayed or shown—this is the accurate definition. "Penggambaran" (depiction/representation) correctly describes the concept of showing how numbers appear in integer form.
Why B is wrong:
- "Penyembunyian" means "hiding" or "concealing," which is the opposite of what representation means. Integer representation is about showing how numbers work, not hiding them.
What does “Digit Manipulation” mean?
Correct Answer (A): Tindakan mengubah atau mengendalikan angka-angka.
"Manipulation" means to change, control, or handle something. "Digit manipulation" literally means working with numbers by changing or controlling them—like rearranging digits, modifying calculations, or altering numerical data.
Why B is wrong:
"Melestarikan" (preserving/maintaining) is the opposite of what manipulation means. Manipulation involves active change, not keeping things the same.
What does “Initial Count” mean?
A is correct: "Initial Count" means the first numeric value in a sequence. "Initial" = starting/first, so this is the beginning number you start counting from.
B is wrong: This describes the "final count" or last value, not the initial one. Initial is the opposite of final.
What does “Casual Count” mean?
A is correct: "Casual Count" means informal or relaxed counting—the word "casual" refers to something done without strict rules or formality.
B is wrong: This describes a formal or strict counting process, which is the opposite of what "casual" means. Formal, rigid processes would be called something like "formal count" or "systematic count," not casual.
What does “Interger Ladder” mean?
• Correct (A): "Urutan bilangan bulat yang mewakili progresi" — An integer ladder shows a sequence of whole numbers moving forward or upward (progression). Think of climbing a ladder—you go up step by step. For example: 2, 4, 6, 8 is a progression.
• Wrong (B): "Urutan bilangan bulat yang mewakili regresi" — This describes regression, which means going backward or downward. An integer ladder doesn't go down; it progresses upward like an actual ladder.
What does “Unit Quantity” mean?
Correct Answer: Jumlah numerik tunggal (A)
- "Unit Quantity" means a single numeric amount — one item or one measurement. The word "unit" refers to a single, individual item.
Why B is wrong:
- "Jumlah numerik banyak" means "many numeric amounts" or "multiple quantities," which is the opposite of a unit quantity.
- A unit quantity is specifically *one*, not multiple.
What does “Counting Cycle” mean?
A is correct: A "Counting Cycle" means repeating through a sequence of numbers over and over—like counting 1, 2, 3, then starting back at 1 again. This is how cycles work: they loop.
B is wrong: Keeping a sequence of numbers static (unchanging) is the opposite of a cycle. A cycle must involve movement and repetition, not staying still.
What does “Counting Horizon” mean?
Correct Answer (A): Batas teoritis dari penghitungan numerik
"Counting horizon" refers to the theoretical limit or boundary of numerical counting—how far you can theoretically count before reaching mathematical constraints or impossibilities.
Why B is wrong:
Option B describes a "dasar atau tingkat awal" (base or starting level), which is the opposite concept. A counting horizon is about the *end point or limit*, not where you begin counting.
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