Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 240 · 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: 98 × 58 = 5684. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 70 × 79 = 5527. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 12 × 16 = 197. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 42 × 20 = 840. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 236 + 158 = 394. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 179 + 370 = 545. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 824 + 973 = 1797. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 573 + 754 = 1328. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 852 + 217 = 1074. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 85 × 26 = 2210. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 255 + 634 = 894. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 982 + 162 = 1141. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 639 + 908 = 1549. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 387 + 538 = 925. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 205 + 355 = 560. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 98 × 33 = 3234. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 901 + 636 = 1543. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 75 × 44 = 3300. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 363 + 354 = 717. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 36 × 12 = 438. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 758 + 977 = 1738. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 43 × 37 = 1591. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 214 + 268 = 482. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 796 + 242 = 1044. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 52 × 50 = 2600. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 367 + 823 = 1190. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 618 + 734 = 1352. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 67 × 40 = 2682. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 440 + 658 = 1098. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 96 × 26 = 2488. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 702 + 593 = 1290. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 28 × 58 = 1624. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 945 + 683 = 1628. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 49 × 40 = 1955. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 722 + 122 = 846. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 26 × 71 = 1846. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 69 × 69 = 4757. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 13 × 90 = 1165. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 48 × 59 = 2832. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 911 + 671 = 1582. Correct or wrong? (a) wrong (b) correct

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