Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 7 · 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: 674 + 171 = 852. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 564 + 955 = 1515. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 239 + 172 = 414. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 292 + 892 = 1184. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 814 + 274 = 1088. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 46 × 21 = 966. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 52 × 77 = 4009. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 471 + 805 = 1276. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 15 × 13 = 203. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 729 + 717 = 1445. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 36 × 37 = 1332. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 55 × 49 = 2695. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 24 × 39 = 936. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 94 × 74 = 6956. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 84 × 30 = 2520. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 247 + 162 = 401. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 952 + 862 = 1814. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 19 × 67 = 1273. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 61 × 27 = 1647. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 32 × 30 = 960. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 57 × 73 = 4156. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 23 × 76 = 1748. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 43 × 28 = 1199. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 510 + 637 = 1147. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 24 × 47 = 1128. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 38 × 54 = 2058. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 45 × 49 = 2205. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 93 × 36 = 3350. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 989 + 281 = 1273. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 654 + 744 = 1394. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 57 × 21 = 1197. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 488 + 229 = 717. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 19 × 59 = 1121. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 46 × 31 = 1426. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 70 × 46 = 3220. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 831 + 421 = 1259. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 70 × 27 = 1887. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 58 × 27 = 1566. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 45 × 85 = 3827. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 45 × 16 = 720. Correct or wrong? (a) wrong (b) correct

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