Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 751 · 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: 93 × 31 = 2881. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 12 × 52 = 624. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 721 + 749 = 1464. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 638 + 797 = 1435. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 45 × 19 = 859. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 45 × 76 = 3420. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 395 + 814 = 1209. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 868 + 130 = 998. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 276 + 787 = 1065. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 876 + 829 = 1697. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 22 × 31 = 675. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 841 + 554 = 1397. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 801 + 381 = 1174. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 58 × 93 = 5389. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 41 × 18 = 738. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 15 × 34 = 505. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 905 + 165 = 1078. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 48 × 58 = 2784. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 73 × 95 = 6935. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 173 + 882 = 1055. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 156 + 791 = 946. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 28 × 42 = 1171. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 78 × 54 = 4212. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 583 + 124 = 712. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 16 × 40 = 638. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 867 + 919 = 1786. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 55 × 65 = 3575. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 614 + 856 = 1472. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 65 × 77 = 5005. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 93 × 31 = 2883. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 732 + 699 = 1435. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 58 × 55 = 3197. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 39 × 55 = 2145. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 407 + 218 = 626. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 704 + 126 = 838. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 900 + 370 = 1270. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 25 × 85 = 2125. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 130 + 810 = 940. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 286 + 253 = 539. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 725 + 883 = 1608. Correct or wrong? (a) correct (b) wrong

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