Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 714 · 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: 24 × 77 = 1848. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 495 + 834 = 1331. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 26 × 51 = 1326. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 26 × 59 = 1534. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 92 × 34 = 3128. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 262 + 140 = 402. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 280 + 776 = 1056. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 93 × 17 = 1585. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 825 + 660 = 1493. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 628 + 877 = 1499. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 35 × 75 = 2625. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 286 + 483 = 770. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 36 × 86 = 3096. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 786 + 797 = 1587. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 62 × 43 = 2666. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 76 × 86 = 6536. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 90 × 96 = 8640. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 81 × 77 = 6233. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 16 × 87 = 1397. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 860 + 947 = 1807. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 21 × 36 = 761. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 327 + 130 = 457. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 61 × 32 = 1951. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 363 + 246 = 609. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 639 + 563 = 1194. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 35 × 69 = 2415. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 17 × 64 = 1090. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 92 × 53 = 4878. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 12 × 21 = 252. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 941 + 378 = 1317. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 930 + 429 = 1363. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 75 × 18 = 1350. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 62 × 27 = 1676. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 15 × 79 = 1183. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 437 + 935 = 1375. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 93 × 53 = 4929. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 25 × 61 = 1520. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 38 × 78 = 2968. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 288 + 708 = 996. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 28 × 21 = 581. Correct or wrong? (a) wrong (b) correct

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