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Question (31)

QN0015142

Which statement illustrates the commutative property of addition?

(A) (2 + 3) + 4 = 2 + (3 + 4)
(B) 7 + (–4) = (–4) + 7
(C) 5 × (2 + 3) = 5 × 2 + 5 × 3
(D) 10 – 3 = 7

Correct Answer: B

Explanation:

Commutative property means changing the order of addition does not change the value.

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Question (32)

QN0015143

Which statement illustrates the associative property of addition?

(A) 8 + 5 = 5 + 8
(B) 3 × 4 = 4 × 3
(C) (6 + 4) + 2 = 6 + (4 + 2)
(D) 12 – 4 = 8

Correct Answer: C

Explanation:

Associative property means changing the grouping of terms does not change the value.

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Question (33)

QN0015144

Manasa forgot to add 9055 to her total of 11749. What should she do?

(A) Recalculate everything
(B) Subtract 9055
(C) Add 9055 to 11749
(D) Divide by 9055

Correct Answer: C

Explanation:

She can simply add the missing number to the obtained total.

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Question (34)

QN0015145

Which expression is equivalent to 200 – (40 + 3)?

(A) 200 – 40 + 3
(B) 200 + 40 – 3
(C) 200 – 40 – 3
(D) 200 + 40 + 3

Correct Answer: C

Explanation:

Removing brackets after a minus sign changes the signs inside.

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Question (35)

QN0015146

Which expression is equivalent to 500 – (250 – 100)?

(A) 500 – 250 – 100
(B) 500 + 250 – 100
(C) 500 – 250 + 100
(D) 500 + 250 + 100

Correct Answer: C

Explanation:

Removing the bracket changes –100 to +100.

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Question (36)

QN0015147

Which expression is equivalent to 28 + (35 – 10)?

(A) 28 – 35 – 10
(B) 28 + 35 – 10
(C) 28 – 35 + 10
(D) 28 + 10 – 35

Correct Answer: B

Explanation:

A bracket preceded by a plus sign can be removed without changing signs.

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Question (37)

QN0015148

Which expression correctly represents twice the amount (43 + 24)?

(A) 2 × 43 + 24
(B) 2 × (43 + 24)
(C) 43 + 24 + 2
(D) 2 + 43 + 24

Correct Answer: B

Explanation:

Twice the total amount means multiplying the entire sum by 2.

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Question (38)

QN0015149

Which property is shown by 4 × 5 + 3 × 5 = (4 + 3) × 5?

(A) Commutative property
(B) Associative property
(C) Distributive property
(D) Identity property

Correct Answer: C

Explanation:

The common factor 5 is distributed across the sum.

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Question (31)

Which statement illustrates the commutative property of addition?

Explanation:

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Question (32)

Which statement illustrates the associative property of addition?

Explanation:

Link:

Question (33)

Manasa forgot to add 9055 to her total of 11749. What should she do?

Explanation:

Link:

Question (34)

Which expression is equivalent to 200 – (40 + 3)?

Explanation:

Link:

Question (35)

Which expression is equivalent to 500 – (250 – 100)?

Explanation:

Link:

Question (36)

Which expression is equivalent to 28 + (35 – 10)?

Explanation:

Link:

Question (37)

Which expression correctly represents twice the amount (43 + 24)?

Explanation:

Link:

Question (38)

Which property is shown by 4 × 5 + 3 × 5 = (4 + 3) × 5?

Explanation:

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