Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 558 · 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: 622 + 430 = 1049. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 803 + 818 = 1621. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 53 × 96 = 5088. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 12 × 91 = 1092. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 16 × 64 = 1024. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 24 × 54 = 1296. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 88 × 12 = 1051. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 27 × 23 = 621. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 199 + 624 = 823. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 643 + 294 = 937. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 208 + 266 = 474. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 686 + 702 = 1380. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 25 × 90 = 2250. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 29 × 57 = 1651. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 747 + 784 = 1526. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 76 × 23 = 1743. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 53 × 15 = 791. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 983 + 235 = 1218. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 87 × 79 = 6869. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 63 × 39 = 2457. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 70 × 99 = 6930. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 99 × 34 = 3366. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 609 + 975 = 1587. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 314 + 126 = 436. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 97 × 33 = 3198. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 77 × 18 = 1386. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 35 × 90 = 3150. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 80 × 31 = 2480. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 71 × 21 = 1487. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 369 + 574 = 943. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 34 × 37 = 1258. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 560 + 974 = 1526. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 35 × 65 = 2279. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 182 + 373 = 555. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 12 × 82 = 984. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 824 + 978 = 1802. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 604 + 681 = 1282. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 75 × 97 = 7275. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 65 × 46 = 2989. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 58 × 32 = 1852. Correct or wrong? (a) correct (b) wrong

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