Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 572 · 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: 60 × 87 = 5220. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 16 × 95 = 1520. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 718 + 641 = 1351. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 980 + 653 = 1628. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 572 + 798 = 1370. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 53 × 58 = 3074. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 29 × 50 = 1443. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 207 + 811 = 1023. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 777 + 159 = 938. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 493 + 674 = 1162. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 724 + 682 = 1406. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 513 + 732 = 1245. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 948 + 736 = 1684. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 88 × 73 = 6425. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 58 × 84 = 4872. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 551 + 852 = 1403. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 34 × 99 = 3370. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 79 × 47 = 3713. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 52 × 68 = 3536. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 954 + 125 = 1087. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 93 × 72 = 6700. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 33 × 24 = 792. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 68 × 53 = 3604. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 485 + 263 = 746. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 77 × 74 = 5698. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 665 + 285 = 951. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 530 + 419 = 949. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 98 × 63 = 6174. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 546 + 989 = 1543. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 396 + 884 = 1288. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 78 × 67 = 5234. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 148 + 831 = 979. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 46 × 78 = 3588. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 62 × 31 = 1922. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 469 + 541 = 1018. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 19 × 96 = 1824. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 463 + 700 = 1163. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 986 + 461 = 1451. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 648 + 306 = 954. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 490 + 531 = 1024. Correct or wrong? (a) wrong (b) correct

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