Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 400 · 40 questions

The fast method (Casting out nines): Find the nine-check number of each number: add the digits until one digit is left. Do the same sum (× or +) with those digits and shrink the result to one digit too. Shrink the given answer. Different → wrong. Same → it passes the check.

1. 1.Check with nines: 787 + 874 = 1657. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 56 × 63 = 3536. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 649 + 632 = 1275. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 141 + 784 = 919. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 34 × 19 = 647. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 38 × 54 = 2050. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 79 × 68 = 5380. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 867 + 161 = 1028. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 387 + 814 = 1206. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 76 × 32 = 2432. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 811 + 644 = 1462. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 392 + 426 = 820. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 706 + 460 = 1163. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 169 + 526 = 695. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 314 + 627 = 941. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 62 × 36 = 2232. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 354 + 379 = 741. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 55 × 93 = 5115. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 279 + 152 = 423. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 98 × 87 = 8526. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 155 + 930 = 1085. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 778 + 813 = 1591. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 91 × 32 = 2912. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 13 × 25 = 325. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 836 + 552 = 1388. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 300 + 939 = 1239. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 591 + 618 = 1211. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 966 + 699 = 1665. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 781 + 270 = 1051. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 46 × 68 = 3128. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 266 + 696 = 962. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 409 + 657 = 1066. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 63 × 72 = 4538. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 94 × 25 = 2356. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 890 + 702 = 1597. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 836 + 253 = 1097. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 40 × 86 = 3440. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 628 + 293 = 914. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 54 × 68 = 3672. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 74 × 38 = 2805. Correct or wrong? (a) wrong (b) correct

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths