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Question (11)

QN0027230

What is the exact total of 67 and 85?

(A) 150
(B) 151
(C) 152
(D) 153

Correct Answer: C

Explanation:

67 + 85 = 152.

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Question (12)

QN0027231

Which estimate is closest to 73 + 26?

(A) 80
(B) 90
(C) 100
(D) 110

Correct Answer: C

Explanation:

73 ≈ 70 and 26 ≈ 30, so about 100.

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Question (13)

QN0027232

Which estimate is closest to 134 − 56?

(A) 60
(B) 70
(C) 80
(D) 90

Correct Answer: C

Explanation:

134 ≈ 130 and 56 ≈ 50, so about 80.

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Question (14)

QN0027233

What is the exact answer to 134 − 56?

(A) 76
(B) 77
(C) 78
(D) 79

Correct Answer: C

Explanation:

134 − 56 = 78.

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Question (15)

QN0027234

Which number is nearest to 100?

(A) 97
(B) 98
(C) 99
(D) 96

Correct Answer: C

Explanation:

99 is only 1 away from 100.

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Question (16)

QN0027235

What is the estimated answer for 150 − 49?

(A) About 80
(B) About 90
(C) About 100
(D) About 110

Correct Answer: C

Explanation:

150 − 50 ≈ 100.

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Question (17)

QN0027236

Which statement is true?

(A) Estimation always gives the exact answer.
(B) Estimation gives a close answer.
(C) Estimation uses multiplication only.
(D) Estimation cannot be checked.

Correct Answer: B

Explanation:

Estimation gives an approximate answer.

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Question (18)

QN0027237

Which number is closest to 200?

(A) 195
(B) 198
(C) 199
(D) 194

Correct Answer: C

Explanation:

199 is only 1 away from 200.

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Question (19)

QN0027238

What is the estimated answer for 95 + 10 + 5?

(A) About 90
(B) About 100
(C) About 110
(D) About 120

Correct Answer: B

Explanation:

The sum is very close to 100.

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Question (20)

QN0027239

Which estimate is closest to 68 − 26?

(A) 30
(B) 40
(C) 50
(D) 60

Correct Answer: B

Explanation:

68 ≈ 70 and 26 ≈ 30, so about 40.

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Question (11)

What is the exact total of 67 and 85?

Explanation:

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Question (12)

Which estimate is closest to 73 + 26?

Explanation:

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Question (13)

Which estimate is closest to 134 − 56?

Explanation:

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Question (14)

What is the exact answer to 134 − 56?

Explanation:

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Question (15)

Which number is nearest to 100?

Explanation:

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Question (16)

What is the estimated answer for 150 − 49?

Explanation:

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Question (17)

Which statement is true?

Explanation:

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Question (18)

Which number is closest to 200?

Explanation:

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Question (19)

What is the estimated answer for 95 + 10 + 5?

Explanation:

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Question (20)

Which estimate is closest to 68 − 26?

Explanation:

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