Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 235 · 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: 761 + 745 = 1506. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 28 × 77 = 2162. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 620 + 240 = 860. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 72 × 88 = 6338. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 228 + 353 = 581. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 25 × 19 = 475. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 874 + 592 = 1466. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 373 + 978 = 1351. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 83 × 84 = 6972. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 99 × 74 = 7324. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 177 + 664 = 844. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 93 × 51 = 4743. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 875 + 752 = 1627. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 88 × 31 = 2734. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 14 × 58 = 812. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 301 + 318 = 614. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 348 + 124 = 479. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 44 × 57 = 2508. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 605 + 250 = 855. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 15 × 12 = 181. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 34 × 53 = 1802. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 667 + 818 = 1485. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 38 × 77 = 2922. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 942 + 187 = 1129. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 66 × 96 = 6336. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 18 × 82 = 1476. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 72 × 14 = 1008. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 804 + 233 = 1037. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 91 × 27 = 2457. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 58 × 13 = 754. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 227 + 680 = 910. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 44 × 96 = 4224. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 435 + 552 = 987. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 15 × 18 = 270. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 86 × 17 = 1462. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 784 + 331 = 1114. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 17 × 65 = 1105. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 61 × 33 = 2008. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 32 × 90 = 2878. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 655 + 780 = 1437. Correct or wrong? (a) wrong (b) correct

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