Estimate to check whether an answer is sensible

Question 1

Diego says 72 + 21 = 93. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 2

Estimate 54 + 19 by using the nearest tens. Which estimate is best?

• A. 100
• B. 70
• C. 170
• D. 40

Question 3

Liam says 71 + 23 = 134. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 4

Estimate 28 + 24 by using the nearest tens. Which estimate is best?

• A. 50
• B. 80
• C. 150
• D. 20

Question 5

Mei says 40 + 34 = 74. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 6

Estimate 37 + 20 by using the nearest tens. Which estimate is best?

• A. 60
• B. 90
• C. 160
• D. 30

Question 7

Aisha says 65 + 19 = 134. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 8

Estimate 22 + 24 by using the nearest tens. Which estimate is best?

• A. 140
• B. 70
• C. 10
• D. 40

Question 9

Felix says 37 + 26 = 63. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 10

Estimate 49 + 18 by using the nearest tens. Which estimate is best?

• A. 170
• B. 70
• C. 100
• D. 40

Question 11

Chloe says 47 + 49 = 146. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 12

Estimate 31 + 27 by using the nearest tens. Which estimate is best?

• A. 90
• B. 30
• C. 60
• D. 160

Question 13

Grace says 60 + 21 = 121. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 14

Estimate 47 + 28 by using the nearest tens. Which estimate is best?

• A. 110
• B. 80
• C. 180
• D. 50

Question 15

Hana says 32 + 23 = 55. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 16

Estimate 64 + 18 by using the nearest tens. Which estimate is best?

• A. 110
• B. 50
• C. 80
• D. 180