Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 36 · 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: 25 × 27 = 675. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 15 × 64 = 960. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 79 × 21 = 1659. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 886 + 354 = 1246. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 415 + 634 = 1049. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 55 × 27 = 1485. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 70 × 91 = 6370. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 440 + 870 = 1308. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 70 × 21 = 1465. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 18 × 32 = 576. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 80 × 95 = 7592. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 568 + 913 = 1481. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 883 + 846 = 1729. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 56 × 28 = 1561. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 839 + 198 = 1037. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 53 × 67 = 3557. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 168 + 596 = 764. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 789 + 826 = 1617. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 41 × 97 = 3975. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 97 × 23 = 2239. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 68 × 70 = 4760. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 436 + 164 = 606. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 847 + 886 = 1733. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 191 + 862 = 1053. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 33 × 75 = 2476. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 22 × 22 = 483. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 44 × 92 = 4054. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 946 + 562 = 1508. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 75 × 45 = 3375. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 292 + 708 = 1005. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 59 × 70 = 4130. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 904 + 138 = 1045. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 42 × 87 = 3651. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 818 + 673 = 1491. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 85 × 26 = 2210. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 67 × 37 = 2479. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 50 × 44 = 2200. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 55 × 22 = 1213. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 169 + 214 = 383. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 513 + 531 = 1041. Correct or wrong? (a) correct (b) wrong

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