Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 872 · 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: 35 × 61 = 2140. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 26 × 89 = 2314. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 718 + 928 = 1649. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 19 × 29 = 546. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 64 × 40 = 2560. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 640 + 147 = 793. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 459 + 143 = 602. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 360 + 497 = 851. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 76 × 62 = 4714. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 700 + 127 = 827. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 46 × 13 = 595. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 265 + 598 = 859. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 65 × 89 = 5784. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 83 × 50 = 4150. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 162 + 197 = 359. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 20 × 95 = 1902. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 77 × 31 = 2394. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 165 + 243 = 414. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 996 + 690 = 1686. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 52 × 30 = 1560. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 199 + 992 = 1184. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 284 + 127 = 419. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 28 × 75 = 2100. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 901 + 807 = 1708. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 48 × 55 = 2640. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 397 + 806 = 1196. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 81 × 45 = 3650. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 39 × 21 = 819. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 774 + 243 = 1014. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 838 + 554 = 1384. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 443 + 707 = 1150. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 737 + 344 = 1081. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 618 + 668 = 1281. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 28 × 63 = 1764. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 13 × 38 = 502. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 80 × 12 = 960. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 80 × 85 = 6799. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 210 + 727 = 933. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 444 + 269 = 713. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 15 × 83 = 1245. Correct or wrong? (a) wrong (b) correct

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