Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 744 · 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: 31 × 62 = 1929. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 88 × 65 = 5720. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 31 × 39 = 1209. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 53 × 83 = 4391. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 35 × 65 = 2270. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 52 × 13 = 680. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 241 + 461 = 707. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 66 × 64 = 4224. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 94 × 36 = 3384. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 12 × 41 = 493. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 762 + 296 = 1058. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 893 + 428 = 1321. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 689 + 535 = 1221. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 18 × 15 = 270. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 25 × 68 = 1693. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 457 + 182 = 639. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 27 × 88 = 2376. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 828 + 410 = 1238. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 711 + 752 = 1467. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 544 + 610 = 1147. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 175 + 153 = 328. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 734 + 479 = 1220. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 954 + 258 = 1216. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 72 × 91 = 6552. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 62 × 96 = 5952. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 20 × 46 = 919. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 21 × 80 = 1677. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 872 + 341 = 1212. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 275 + 425 = 700. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 70 × 85 = 5950. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 957 + 460 = 1417. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 34 × 28 = 952. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 30 × 30 = 899. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 40 × 76 = 3040. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 22 × 17 = 375. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 19 × 78 = 1482. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 395 + 316 = 716. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 86 × 32 = 2753. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 315 + 650 = 965. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 200 + 231 = 431. Correct or wrong? (a) correct (b) wrong

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