Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 513 · 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: 52 × 70 = 3646. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 49 × 70 = 3433. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 76 × 23 = 1748. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 94 × 13 = 1222. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 34 × 33 = 1123. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 33 × 27 = 891. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 17 × 31 = 527. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 581 + 736 = 1317. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 334 + 604 = 942. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 750 + 305 = 1062. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 52 × 99 = 5148. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 357 + 542 = 897. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 316 + 527 = 840. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 546 + 715 = 1260. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 722 + 288 = 1010. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 17 × 71 = 1209. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 435 + 325 = 760. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 37 × 59 = 2183. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 389 + 709 = 1098. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 797 + 227 = 1020. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 19 × 69 = 1312. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 41 × 65 = 2665. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 381 + 743 = 1124. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 792 + 662 = 1454. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 52 × 58 = 3016. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 175 + 335 = 510. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 17 × 22 = 374. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 59 × 72 = 4248. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 91 × 49 = 4459. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 36 × 55 = 1980. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 30 × 28 = 840. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 309 + 169 = 478. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 29 × 79 = 2291. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 41 × 36 = 1476. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 486 + 190 = 676. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 243 + 993 = 1236. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 89 × 20 = 1780. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 57 × 14 = 798. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 134 + 931 = 1065. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 97 × 81 = 7857. Correct or wrong? (a) correct (b) wrong

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