Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 973 · 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: 27 × 35 = 942. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 247 + 492 = 738. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 30 × 15 = 450. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 53 × 51 = 2702. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 60 × 95 = 5707. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 628 + 842 = 1476. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 209 + 982 = 1183. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 816 + 558 = 1374. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 14 × 25 = 345. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 432 + 251 = 689. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 18 × 31 = 556. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 63 × 19 = 1197. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 93 × 25 = 2323. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 963 + 821 = 1784. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 29 × 12 = 356. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 374 + 655 = 1021. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 147 + 358 = 505. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 77 × 96 = 7392. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 26 × 62 = 1612. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 460 + 946 = 1406. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 66 × 13 = 858. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 43 × 25 = 1076. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 52 × 82 = 4264. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 16 × 37 = 592. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 174 + 691 = 865. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 720 + 806 = 1526. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 38 × 56 = 2128. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 78 × 13 = 1021. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 33 × 25 = 825. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 551 + 687 = 1238. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 29 × 45 = 1305. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 138 + 451 = 586. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 83 × 28 = 2327. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 79 × 20 = 1580. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 73 × 24 = 1756. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 222 + 314 = 534. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 815 + 888 = 1703. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 74 × 55 = 4062. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 31 × 30 = 932. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 26 × 47 = 1222. Correct or wrong? (a) wrong (b) correct

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