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Question (11)

QN0032725

Using the nearest multiple strategy, 12 × 28 can first be written as

(A) 12 × 30 − 24
(B) 12 × 30 + 24
(C) 12 × 20 + 8
(D) 12 × 25 + 36

Correct Answer: A

Explanation:

Since 28 is 2 less than 30, calculate 12 × 30 and subtract 12 × 2.

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Question (12)

QN0032726

What is the value of 12 × 28?

(A) 326
(B) 336
(C) 346
(D) 356

Correct Answer: B

Explanation:

12 × 30 = 360. Subtract 24 to get 336.

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Question (13)

QN0032727

To find 99 × 15, which expression is correct?

(A) 100 × 15 + 15
(B) 100 × 15 − 15
(C) 90 × 15 + 9
(D) 99 × 10 + 15

Correct Answer: B

Explanation:

Since 99 is 1 less than 100, subtract one group of 15.

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Question (14)

QN0032728

What is 99 × 15?

(A) 1,475
(B) 1,485
(C) 1,495
(D) 1,500

Correct Answer: B

Explanation:

100 × 15 = 1,500. Then subtract 15 to get 1,485.

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Question (15)

QN0032729

Using the nearest multiple strategy, 75 × 31 is equal to

(A) 75 × 30 + 75
(B) 75 × 30 − 75
(C) 75 × 40 − 75
(D) 75 × 20 + 31

Correct Answer: A

Explanation:

Since 31 = 30 + 1, add one more group of 75.

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Question (16)

QN0032730

Find the value of 75 × 31.

(A) 2,225
(B) 2,250
(C) 2,325
(D) 2,425

Correct Answer: C

Explanation:

75 × 30 = 2,250. Add 75 to get 2,325.

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Question (17)

QN0032731

Which expression correctly represents 22 × 42 using the nearest multiple strategy?

(A) 22 × 40 + 44
(B) 22 × 40 − 44
(C) 22 × 50 − 22
(D) 22 × 30 + 22

Correct Answer: A

Explanation:

Since 42 = 40 + 2, add 22 × 2 = 44.

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Question (18)

QN0032732

What is the product of 22 × 42?

(A) 904
(B) 914
(C) 924
(D) 934

Correct Answer: C

Explanation:

22 × 40 = 880 and 22 × 2 = 44. Total = 924.

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Question (19)

QN0032733

Which multiplication is best solved by subtracting from the next multiple of 10?

(A) 48 × 9
(B) 36 × 20
(C) 11 × 100
(D) 40 × 50

Correct Answer: A

Explanation:

Since 9 is 1 less than 10, calculate 48 × 10 and subtract 48.

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Question (20)

QN0032734

A student solves 8 × 25 by calculating 8 × 20 + 8 × 5. Which strategy is being used?

(A) Order of multiplication
(B) Nearest multiple
(C) Doubling and halving
(D) Multiplication by 100

Correct Answer: B

Explanation:

The number 25 is broken into the nearby easy multiple 20 and the remaining 5 to simplify multiplication.

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Question (11)

Using the nearest multiple strategy, 12 × 28 can first be written as

Explanation:

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Question (12)

What is the value of 12 × 28?

Explanation:

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Question (13)

To find 99 × 15, which expression is correct?

Explanation:

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Question (14)

What is 99 × 15?

Explanation:

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Question (15)

Using the nearest multiple strategy, 75 × 31 is equal to

Explanation:

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Question (16)

Find the value of 75 × 31.

Explanation:

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Question (17)

Which expression correctly represents 22 × 42 using the nearest multiple strategy?

Explanation:

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Question (18)

What is the product of 22 × 42?

Explanation:

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Question (19)

Which multiplication is best solved by subtracting from the next multiple of 10?

Explanation:

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Question (20)

A student solves 8 × 25 by calculating 8 × 20 + 8 × 5. Which strategy is being used?

Explanation:

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