Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 458 · 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: 420 + 284 = 706. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 277 + 638 = 916. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 43 × 20 = 868. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 64 × 60 = 3840. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 51 × 19 = 969. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 600 + 993 = 1599. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 733 + 384 = 1117. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 522 + 466 = 996. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 86 × 15 = 1296. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 400 + 571 = 973. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 967 + 845 = 1812. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 39 × 74 = 2886. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 761 + 742 = 1503. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 86 × 35 = 3010. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 660 + 942 = 1602. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 692 + 742 = 1434. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 90 × 55 = 4942. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 70 × 77 = 5397. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 805 + 257 = 1069. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 749 + 638 = 1392. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 48 × 55 = 2638. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 907 + 406 = 1313. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 42 × 63 = 2649. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 15 × 43 = 645. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 96 × 17 = 1636. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 16 × 49 = 784. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 93 × 90 = 8362. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 80 × 85 = 6800. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 406 + 325 = 733. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 54 × 90 = 4860. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 13 × 17 = 221. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 702 + 770 = 1472. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 48 × 21 = 1008. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 658 + 341 = 999. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 93 × 30 = 2795. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 322 + 130 = 444. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 606 + 426 = 1035. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 83 × 66 = 5476. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 850 + 340 = 1189. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 466 + 725 = 1191. Correct or wrong? (a) correct (b) wrong

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