Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 39 · 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: 890 + 516 = 1406. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 95 × 79 = 7501. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 910 + 955 = 1865. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 96 × 32 = 3066. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 535 + 989 = 1524. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 47 × 13 = 616. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 14 × 51 = 714. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 133 + 573 = 706. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 679 + 244 = 923. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 921 + 494 = 1421. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 848 + 685 = 1533. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 221 + 751 = 967. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 19 × 34 = 642. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 21 × 14 = 294. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 18 × 24 = 431. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 83 × 46 = 3817. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 221 + 467 = 685. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 72 × 26 = 1872. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 41 × 82 = 3362. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 228 + 330 = 558. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 41 × 36 = 1483. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 75 × 85 = 6375. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 88 × 70 = 6160. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 227 + 642 = 866. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 47 × 17 = 799. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 957 + 297 = 1257. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 86 × 43 = 3703. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 967 + 278 = 1240. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 60 × 17 = 1023. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 466 + 298 = 764. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 76 × 91 = 6924. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 684 + 651 = 1335. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 123 + 129 = 252. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 894 + 349 = 1243. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 92 × 92 = 8461. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 94 × 15 = 1410. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 90 × 82 = 7380. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 52 × 54 = 2816. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 222 + 947 = 1169. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 474 + 531 = 1004. Correct or wrong? (a) correct (b) wrong

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