Check answers with the inverse operation

Question 1

Liam says 213 + 161 = 384. Liam checks with 384 − 161. Is Liam's answer correct?

• A. yes
• B. no

Question 2

Which calculation checks 764 − 369 = 395?

• A. 764 − 395 − 369
• B. 395 + 369
• C. 395 − 369
• D. 764 + 369

Question 3

Fatima says 244 + 119 = 363. Fatima checks with 363 − 119. Is Fatima's answer correct?

• A. yes
• B. no

Question 4

Which calculation checks 830 − 676 = 154?

• A. 154 + 676
• B. 154 − 676
• C. 830 − 154 − 676
• D. 830 + 676

Question 5

Nia says 603 + 238 = 841. Nia checks with 841 − 238. Is Nia's answer correct?

• A. yes
• B. no

Question 6

Which calculation checks 650 − 458 = 192?

• A. 650 + 458
• B. 192 − 458
• C. 192 + 458
• D. 650 − 192 − 458

Question 7

Hiro says 674 + 270 = 944. Hiro checks with 944 − 270. Is Hiro's answer correct?

• A. yes
• B. no

Question 8

Which calculation checks 452 − 323 = 129?

• A. 452 − 129 − 323
• B. 452 + 323
• C. 129 − 323
• D. 129 + 323

Question 9

Daniel says 631 + 104 = 635. Daniel checks with 635 − 104. Is Daniel's answer correct?

• A. yes
• B. no

Question 10

Which calculation checks 870 − 362 = 508?

• A. 870 − 508 − 362
• B. 508 − 362
• C. 870 + 362
• D. 508 + 362

Question 11

Luis says 572 + 158 = 730. Luis checks with 730 − 158. Is Luis's answer correct?

• A. yes
• B. no

Question 12

Which calculation checks 803 − 329 = 474?

• A. 803 + 329
• B. 474 + 329
• C. 803 − 474 − 329
• D. 474 − 329

Question 13

Yuki says 539 + 209 = 848. Yuki checks with 848 − 209. Is Yuki's answer correct?

• A. yes
• B. no

Question 14

Which calculation checks 339 − 270 = 69?

• A. 339 + 270
• B. 69 + 270
• C. 69 − 270
• D. 339 − 69 − 270

Question 15

Sam says 389 + 189 = 578. Sam checks with 578 − 189. Is Sam's answer correct?

• A. yes
• B. no

Question 16

Which calculation checks 806 − 702 = 104?

• A. 806 + 702
• B. 104 − 702
• C. 104 + 702
• D. 806 − 104 − 702