Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 252 · 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: 876 + 356 = 1225. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 35 × 15 = 530. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 434 + 689 = 1123. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 67 × 68 = 4558. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 432 + 820 = 1258. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 26 × 49 = 1274. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 270 + 317 = 582. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 17 × 82 = 1396. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 55 × 68 = 3740. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 909 + 576 = 1482. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 206 + 830 = 1030. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 68 × 38 = 2584. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 42 × 76 = 3192. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 471 + 973 = 1450. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 28 × 68 = 1904. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 862 + 338 = 1197. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 27 × 64 = 1725. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 52 × 18 = 936. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 762 + 536 = 1296. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 35 × 91 = 3185. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 37 × 52 = 1924. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 27 × 41 = 1109. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 814 + 135 = 949. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 255 + 310 = 565. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 316 + 353 = 671. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 411 + 750 = 1161. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 820 + 787 = 1607. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 83 × 41 = 3403. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 39 × 85 = 3314. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 601 + 591 = 1195. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 90 × 86 = 7734. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 59 × 96 = 5667. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 67 × 90 = 6030. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 50 × 66 = 3300. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 47 × 12 = 571. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 459 + 456 = 915. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 589 + 818 = 1407. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 15 × 16 = 240. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 719 + 693 = 1413. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 30 × 49 = 1469. Correct or wrong? (a) wrong (b) correct

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