Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 589 · 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: 469 + 808 = 1277. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 332 + 982 = 1314. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 550 + 168 = 718. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 62 × 50 = 3098. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 643 + 390 = 1033. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 178 + 837 = 1019. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 592 + 943 = 1535. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 211 + 500 = 706. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 222 + 160 = 382. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 31 × 22 = 689. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 31 × 12 = 372. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 46 × 89 = 4094. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 29 × 32 = 928. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 22 × 65 = 1430. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 927 + 657 = 1586. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 75 × 38 = 2850. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 22 × 15 = 334. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 98 × 17 = 1664. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 44 × 54 = 2376. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 45 × 23 = 1037. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 78 × 74 = 5771. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 22 × 31 = 679. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 16 × 21 = 338. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 49 × 95 = 4655. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 96 × 36 = 3456. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 352 + 127 = 487. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 257 + 298 = 560. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 25 × 84 = 2107. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 182 + 708 = 890. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 48 × 15 = 720. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 557 + 860 = 1419. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 70 × 31 = 2170. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 89 × 33 = 2937. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 64 × 32 = 2045. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 29 × 57 = 1653. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 69 × 20 = 1387. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 73 × 34 = 2482. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 44 × 83 = 3653. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 96 × 50 = 4801. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 526 + 727 = 1248. Correct or wrong? (a) wrong (b) correct

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