Check answers with the inverse operation

Question 1

Which calculation checks 508 − 247 = 261?

• A. 261 + 247
• B. 261 − 247
• C. 508 − 261 − 247
• D. 508 + 247

Question 2

Omar says 373 + 284 = 657. Omar checks with 657 − 284. Is Omar's answer correct?

• A. yes
• B. no

Question 3

Which calculation checks 417 − 236 = 181?

• A. 417 − 181 − 236
• B. 417 + 236
• C. 181 − 236
• D. 181 + 236

Question 4

Kai says 386 + 212 = 598. Kai checks with 598 − 212. Is Kai's answer correct?

• A. yes
• B. no

Question 5

Which calculation checks 365 − 279 = 86?

• A. 365 − 86 − 279
• B. 86 + 279
• C. 86 − 279
• D. 365 + 279

Question 6

Mateo says 459 + 144 = 503. Mateo checks with 503 − 144. Is Mateo's answer correct?

• A. yes
• B. no

Question 7

Which calculation checks 549 − 163 = 386?

• A. 549 − 386 − 163
• B. 386 + 163
• C. 386 − 163
• D. 549 + 163

Question 8

Jamal says 391 + 212 = 613. Jamal checks with 613 − 212. Is Jamal's answer correct?

• A. yes
• B. no

Question 9

Which calculation checks 575 − 281 = 294?

• A. 294 + 281
• B. 294 − 281
• C. 575 + 281
• D. 575 − 294 − 281

Question 10

Lucia says 633 + 287 = 920. Lucia checks with 920 − 287. Is Lucia's answer correct?

• A. yes
• B. no

Question 11

Which calculation checks 348 − 189 = 159?

• A. 159 − 189
• B. 159 + 189
• C. 348 + 189
• D. 348 − 159 − 189

Question 12

Ben says 234 + 125 = 359. Ben checks with 359 − 125. Is Ben's answer correct?

• A. yes
• B. no

Question 13

Which calculation checks 873 − 614 = 259?

• A. 873 + 614
• B. 259 + 614
• C. 873 − 259 − 614
• D. 259 − 614

Question 14

Leo says 479 + 163 = 642. Leo checks with 642 − 163. Is Leo's answer correct?

• A. yes
• B. no

Question 15

Which calculation checks 673 − 151 = 522?

• A. 673 − 522 − 151
• B. 673 + 151
• C. 522 − 151
• D. 522 + 151

Question 16

Mateo says 670 + 271 = 941. Mateo checks with 941 − 271. Is Mateo's answer correct?

• A. yes
• B. no