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Question (11)

QN0032785

Find the product: 98 × 25

(A) 2,350
(B) 2,400
(C) 2,450
(D) 2,500

Correct Answer: C

Explanation:

100 × 25 − 2 × 25 = 2500 − 50 = 2450.

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Question (12)

QN0032786

Which pattern correctly represents consecutive multiples of 15?

(A) 15, 25, 35, 45
(B) 15, 30, 45, 60
(C) 15, 35, 55, 75
(D) 15, 40, 65, 90

Correct Answer: B

Explanation:

Consecutive multiples of 15 increase by 15.

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Question (13)

QN0032787

A school collects 36 kg of biodegradable waste and 24 kg of dry leaves for composting. What is the total material collected?

(A) 50 kg
(B) 56 kg
(C) 60 kg
(D) 64 kg

Correct Answer: C

Explanation:

36 + 24 = 60 kg.

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Question (14)

QN0032788

Which expression has the same value as 48 × 5?

(A) 24 × 10
(B) 96 × 5
(C) 12 × 10
(D) 48 × 10

Correct Answer: A

Explanation:

Halve one factor and double the other: 24 × 10 = 240.

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Question (15)

QN0032789

What is the value of 31 × 19?

(A) 579
(B) 589
(C) 599
(D) 609

Correct Answer: B

Explanation:

31 × 20 − 31 = 620 − 31 = 589.

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Question (16)

QN0032790

Which multiplication shows the correct pattern?

(A) 18 × 5 = 95
(B) 18 × 6 = 108
(C) 18 × 7 = 118
(D) 18 × 8 = 154

Correct Answer: B

Explanation:

18 × 6 = 108.

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Question (17)

QN0032791

A farmer fills 32 baskets with 25 oranges in each basket. How many oranges are there in all?

(A) 750
(B) 780
(C) 800
(D) 820

Correct Answer: C

Explanation:

25 × 32 = 800.

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Question (18)

QN0032792

Which of the following helps reduce waste going to landfills?

(A) Burning plastic
(B) Mixing all waste together
(C) Composting biodegradable waste
(D) Throwing waste into rivers

Correct Answer: C

Explanation:

Composting converts biodegradable waste into useful manure.

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Question (19)

QN0032793

Which number completes the pattern? 84, 96, 108, 120, ____

(A) 128
(B) 130
(C) 132
(D) 134

Correct Answer: C

Explanation:

Add 12 to 120. The next number is 132.

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Question (20)

QN0032794

A teacher asks students to find 52 × 9 by using the nearest multiple of 10. Which calculation is correct?

(A) 52 × 10 + 52
(B) 52 × 10 − 52
(C) 50 × 9 + 2
(D) 52 × 8 + 10

Correct Answer: B

Explanation:

Since 9 is 1 less than 10, calculate 52 × 10 and subtract 52.

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Question (11)

Find the product: 98 × 25

Explanation:

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Question (12)

Which pattern correctly represents consecutive multiples of 15?

Explanation:

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Question (13)

A school collects 36 kg of biodegradable waste and 24 kg of dry leaves for composting. What is the total material collected?

Explanation:

Link:

Question (14)

Which expression has the same value as 48 × 5?

Explanation:

Link:

Question (15)

What is the value of 31 × 19?

Explanation:

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Question (16)

Which multiplication shows the correct pattern?

Explanation:

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Question (17)

A farmer fills 32 baskets with 25 oranges in each basket. How many oranges are there in all?

Explanation:

Link:

Question (18)

Which of the following helps reduce waste going to landfills?

Explanation:

Link:

Question (19)

Which number completes the pattern? 84, 96, 108, 120, ____

Explanation:

Link:

Question (20)

A teacher asks students to find 52 × 9 by using the nearest multiple of 10. Which calculation is correct?

Explanation:

Link:

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