Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 321 · 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: 908 + 662 = 1570. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 569 + 976 = 1545. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 41 × 21 = 861. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 440 + 852 = 1292. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 563 + 394 = 957. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 148 + 684 = 827. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 380 + 420 = 800. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 486 + 992 = 1478. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 128 + 628 = 749. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 242 + 658 = 898. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 210 + 810 = 1020. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 57 × 48 = 2736. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 46 × 36 = 1652. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 193 + 982 = 1175. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 88 × 25 = 2200. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 65 × 43 = 2795. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 735 + 950 = 1686. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 80 × 81 = 6482. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 71 × 61 = 4339. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 14 × 71 = 994. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 40 × 33 = 1316. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 28 × 58 = 1624. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 651 + 773 = 1424. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 129 + 891 = 1019. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 89 × 74 = 6586. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 597 + 274 = 871. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 242 + 926 = 1160. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 168 + 421 = 593. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 22 × 99 = 2178. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 168 + 515 = 683. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 287 + 719 = 1011. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 15 × 12 = 183. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 66 × 88 = 5808. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 22 × 42 = 921. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 82 × 30 = 2466. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 329 + 962 = 1294. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 26 × 32 = 838. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 31 × 15 = 465. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 68 × 17 = 1156. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 22 × 63 = 1386. Correct or wrong? (a) correct (b) wrong

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