Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 926 · 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: 230 + 917 = 1147. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 710 + 982 = 1692. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 860 + 570 = 1438. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 315 + 765 = 1080. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 275 + 272 = 547. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 953 + 946 = 1899. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 29 × 14 = 406. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 859 + 154 = 1011. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 523 + 208 = 731. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 22 × 21 = 455. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 33 × 98 = 3234. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 87 × 45 = 3915. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 733 + 626 = 1359. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 30 × 48 = 1434. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 17 × 76 = 1297. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 15 × 31 = 473. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 58 × 37 = 2146. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 99 × 15 = 1485. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 283 + 301 = 590. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 67 × 94 = 6302. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 575 + 533 = 1110. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 21 × 26 = 541. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 44 × 48 = 2112. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 79 × 67 = 5287. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 89 × 14 = 1246. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 81 × 23 = 1863. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 425 + 635 = 1056. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 503 + 879 = 1388. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 78 × 69 = 5382. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 156 + 444 = 600. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 56 × 97 = 5432. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 94 × 61 = 5734. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 16 × 43 = 688. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 30 × 27 = 816. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 552 + 858 = 1413. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 32 × 56 = 1798. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 67 × 55 = 3690. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 13 × 75 = 982. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 721 + 470 = 1186. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 37 × 55 = 2031. Correct or wrong? (a) wrong (b) correct

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