Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 72 · 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: 849 + 178 = 1027. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 31 × 45 = 1393. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 854 + 879 = 1733. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 93 × 57 = 5301. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 700 + 514 = 1214. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 88 × 66 = 5815. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 41 × 86 = 3526. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 257 + 437 = 694. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 957 + 584 = 1545. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 948 + 487 = 1435. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 727 + 797 = 1524. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 14 × 14 = 203. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 86 × 16 = 1376. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 95 × 35 = 3323. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 38 × 19 = 715. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 74 × 76 = 5624. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 176 + 762 = 938. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 98 × 55 = 5390. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 26 × 74 = 1929. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 64 × 33 = 2112. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 23 × 41 = 935. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 952 + 423 = 1377. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 66 × 40 = 2640. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 375 + 773 = 1153. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 926 + 327 = 1253. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 20 × 81 = 1617. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 12 × 59 = 701. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 567 + 446 = 1013. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 556 + 453 = 1009. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 861 + 941 = 1802. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 98 × 83 = 8126. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 173 + 461 = 634. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 80 × 67 = 5362. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 25 × 95 = 2375. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 95 × 78 = 7406. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 48 × 36 = 1725. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 794 + 623 = 1416. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 94 × 47 = 4424. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 83 × 45 = 3735. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 98 × 99 = 9701. Correct or wrong? (a) wrong (b) correct

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