Estimate to check whether an answer is sensible

Question 1

Zoe says 33 + 37 = 110. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 2

Estimate 62 + 21 by using the nearest tens. Which estimate is best?

• A. 180
• B. 50
• C. 110
• D. 80

Question 3

Sam says 69 + 19 = 88. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 4

Estimate 32 + 19 by using the nearest tens. Which estimate is best?

• A. 80
• B. 50
• C. 20
• D. 150

Question 5

Luis says 72 + 20 = 142. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 6

Estimate 53 + 28 by using the nearest tens. Which estimate is best?

• A. 50
• B. 80
• C. 110
• D. 180

Question 7

Tariq says 79 + 20 = 99. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 8

Estimate 67 + 18 by using the nearest tens. Which estimate is best?

• A. 190
• B. 90
• C. 120
• D. 60

Question 9

Diego says 34 + 47 = 81. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 10

Estimate 52 + 28 by using the nearest tens. Which estimate is best?

• A. 80
• B. 50
• C. 110
• D. 180

Question 11

Hana says 36 + 54 = 90. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 12

Estimate 55 + 23 by using the nearest tens. Which estimate is best?

• A. 180
• B. 80
• C. 110
• D. 50

Question 13

Omar says 66 + 27 = 143. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 14

Estimate 28 + 25 by using the nearest tens. Which estimate is best?

• A. 60
• B. 90
• C. 160
• D. 30

Question 15

Ravi says 43 + 35 = 78. Use an estimate: is that answer sensible?

• A. Yes
• B. No

Question 16

Estimate 36 + 26 by using the nearest tens. Which estimate is best?

• A. 170
• B. 100
• C. 40
• D. 70