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Question (31)

QN0033088

Which mental strategy reduces lengthy calculations?

(A) Splitting numbers into convenient parts
(B) Repeated addition only
(C) Guessing the answer
(D) Counting backwards

Correct Answer: A

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Question (32)

QN0033089

If half of a number is 96, what is the original number?

(A) 182
(B) 188
(C) 192
(D) 196

Correct Answer: C

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Question (33)

QN0033090

What is 96 ÷ 4 using repeated halving?

(A) 22
(B) 23
(C) 24
(D) 26

Correct Answer: C

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Question (34)

QN0033091

Which of the following can be mentally divided by first writing it as 3000 − 12?

(A) 2988
(B) 3012
(C) 3120
(D) 2992

Correct Answer: A

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Question (35)

QN0033092

Which mental strategy is best suited when the dividend is close to a round number?

(A) Compensation by adding or subtracting a small number
(B) Counting one by one
(C) Repeated multiplication
(D) Estimation only

Correct Answer: A

Explanation:

Replace the number with a nearby easy number and then adjust.

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Question (36)

QN0033093

What is 72 ÷ 4 using repeated halving?

(A) 16
(B) 17
(C) 18
(D) 20

Correct Answer: C

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Question (37)

QN0033094

Which number should be added to 1200 to make 1248?

(A) 24
(B) 36
(C) 48
(D) 60

Correct Answer: C

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Question (38)

QN0033095

Which statement is true about mental division?

(A) There is only one correct mental strategy.
(B) Different mental strategies can be used for the same division problem.
(C) Mental division cannot be used for large numbers.
(D) Splitting numbers always gives a wrong answer.

Correct Answer: B

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Question (39)

QN0033096

Which mental strategy is demonstrated by solving 1248 ÷ 6 as (1200 ÷ 6) + (48 ÷ 6)?

(A) Repeated subtraction
(B) Splitting the dividend into convenient parts
(C) Long division
(D) Multiplication by place value

Correct Answer: B

Explanation:

The dividend is split into easy-to-divide parts and the partial quotients are added.

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Question (31)

Which mental strategy reduces lengthy calculations?

Explanation:

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Question (32)

If half of a number is 96, what is the original number?

Explanation:

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Question (33)

What is 96 ÷ 4 using repeated halving?

Explanation:

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Question (34)

Which of the following can be mentally divided by first writing it as 3000 − 12?

Explanation:

Link:

Question (35)

Which mental strategy is best suited when the dividend is close to a round number?

Explanation:

Link:

Question (36)

What is 72 ÷ 4 using repeated halving?

Explanation:

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Question (37)

Which number should be added to 1200 to make 1248?

Explanation:

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Question (38)

Which statement is true about mental division?

Explanation:

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Question (39)

Which mental strategy is demonstrated by solving 1248 ÷ 6 as (1200 ÷ 6) + (48 ÷ 6)?

Explanation:

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