Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 24 · 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: 987 + 534 = 1525. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 904 + 975 = 1881. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 139 + 709 = 841. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 386 + 388 = 769. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 656 + 405 = 1061. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 809 + 181 = 990. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 488 + 463 = 951. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 56 × 81 = 4541. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 33 × 91 = 3003. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 697 + 307 = 1004. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 182 + 384 = 566. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 12 × 15 = 180. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 771 + 136 = 904. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 171 + 262 = 433. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 411 + 643 = 1062. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 918 + 520 = 1438. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 78 × 92 = 7176. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 733 + 871 = 1604. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 69 × 23 = 1592. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 65 × 93 = 6045. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 44 × 86 = 3792. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 42 × 30 = 1260. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 22 × 52 = 1144. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 30 × 78 = 2347. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 810 + 451 = 1261. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 80 × 77 = 6168. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 24 × 56 = 1344. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 50 × 36 = 1800. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 933 + 842 = 1775. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 602 + 174 = 776. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 19 × 34 = 651. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 632 + 862 = 1494. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 381 + 140 = 521. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 74 × 80 = 5925. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 99 × 64 = 6336. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 796 + 480 = 1276. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 77 × 88 = 6776. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 572 + 307 = 879. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 741 + 175 = 921. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 12 × 60 = 720. Correct or wrong? (a) correct (b) wrong

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