G5 U2 Vocabulary

Front

Prime Number

Back

A prime number has exactly two factors: 1 and itself.
✅ Example: 7 (only factors are 1 and 7)
❌ Not Prime: 9 (factors are 1, 3, and 9)

Front

Composite Number

Back

A composite number has more than two factors.
✅ Example: 8 (factors are 1, 2, 4, and 8)
❌ Not Composite: 5 (only factors are 1 and 5)

Front

Sum

Back

The sum is the answer to an addition problem.
✅ Example: 6 + 4 = 10 → The sum is 10

Front

Difference

Back

The difference is the answer to a subtraction problem.
✅ Example: 15 − 9 = 6 → The difference is 6

Front

Product

Back

The product is the answer to a multiplication problem.
✅ Example: 7 × 3 = 21 → The product is 21

Front

Quotient

Back

The quotient is the answer to a division problem.
✅ Example: 20 ÷ 4 = 5 → The quotient is 5

Front

Array

Back

An array is a set of objects arranged in rows and columns to show multiplication.
✅ Example: 3 rows of 4 = 12
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Front

Estimate

Back

To estimate means to find a number that is close to the exact answer.
✅ Example: 49 + 51 ≈ 100 (Estimate by rounding)

Front

Rounding

Back

Rounding means changing a number to the nearest ten, hundred, or other place value.
✅ Example: 67 rounds to 70

Front

Dividend

Back

The dividend is the number you divide into parts in a division problem.
✅ Example: In 20 ÷ 4 = 5, 20 is the dividend.