Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 49 · 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: 16 × 78 = 1248. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 25 × 76 = 1905. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 73 × 81 = 5913. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 62 × 31 = 1923. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 644 + 688 = 1332. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 64 × 12 = 773. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 337 + 155 = 492. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 33 × 61 = 2011. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 582 + 981 = 1555. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 899 + 959 = 1859. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 354 + 661 = 1015. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 75 × 13 = 967. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 522 + 205 = 720. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 777 + 651 = 1428. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 54 × 99 = 5344. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 600 + 236 = 836. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 86 × 54 = 4644. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 48 × 98 = 4704. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 35 × 98 = 3435. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 15 × 73 = 1088. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 519 + 858 = 1384. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 402 + 511 = 919. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 46 × 17 = 779. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 508 + 219 = 731. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 23 × 65 = 1493. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 498 + 688 = 1183. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 307 + 829 = 1136. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 694 + 197 = 895. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 17 × 32 = 539. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 19 × 44 = 836. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 377 + 210 = 587. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 28 × 46 = 1285. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 526 + 831 = 1357. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 16 × 71 = 1136. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 25 × 20 = 501. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 84 × 36 = 3024. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 154 + 412 = 566. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 329 + 827 = 1156. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 675 + 830 = 1505. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 149 + 379 = 528. Correct or wrong? (a) wrong (b) correct

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