Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 823 · 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: 51 × 76 = 3876. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 35 × 96 = 3362. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 24 × 93 = 2232. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 68 × 55 = 3742. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 14 × 28 = 392. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 720 + 638 = 1364. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 566 + 249 = 815. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 60 × 86 = 5160. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 145 + 166 = 311. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 94 × 43 = 4040. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 80 × 65 = 5192. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 463 + 806 = 1269. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 72 × 98 = 7054. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 89 × 33 = 2937. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 70 × 38 = 2659. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 936 + 781 = 1717. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 22 × 40 = 880. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 20 × 23 = 463. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 362 + 738 = 1100. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 19 × 20 = 380. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 21 × 82 = 1727. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 48 × 28 = 1344. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 74 × 52 = 3854. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 281 + 184 = 465. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 36 × 18 = 648. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 135 + 783 = 918. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 235 + 500 = 735. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 92 × 47 = 4324. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 84 × 25 = 2101. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 23 × 30 = 688. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 66 × 22 = 1452. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 528 + 413 = 941. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 23 × 48 = 1112. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 168 + 467 = 632. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 69 × 90 = 6210. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 48 × 68 = 3264. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 468 + 283 = 745. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 255 + 193 = 448. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 54 × 51 = 2754. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 696 + 795 = 1491. Correct or wrong? (a) correct (b) wrong

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