Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 996 · 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: 41 × 55 = 2255. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 35 × 65 = 2275. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 997 + 260 = 1265. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 51 × 13 = 667. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 29 × 22 = 638. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 867 + 256 = 1123. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 483 + 984 = 1464. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 89 × 78 = 6942. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 154 + 867 = 1021. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 773 + 203 = 970. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 84 × 47 = 3956. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 39 × 20 = 780. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 718 + 314 = 1032. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 497 + 265 = 762. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 178 + 139 = 317. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 411 + 964 = 1375. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 844 + 874 = 1717. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 304 + 527 = 837. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 31 × 57 = 1767. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 78 × 23 = 1796. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 73 × 29 = 2117. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 13 × 88 = 1144. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 94 × 88 = 8272. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 69 × 30 = 2069. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 80 × 53 = 4242. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 64 × 73 = 4672. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 305 + 879 = 1184. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 15 × 64 = 960. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 26 × 96 = 2496. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 200 + 360 = 562. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 280 + 813 = 1089. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 135 + 625 = 760. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 14 × 51 = 714. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 84 × 50 = 4198. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 18 × 84 = 1512. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 77 × 23 = 1769. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 29 × 40 = 1160. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 403 + 207 = 610. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 236 + 283 = 519. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 61 × 88 = 5364. Correct or wrong? (a) correct (b) wrong

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