Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 719 · 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: 23 × 78 = 1794. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 620 + 256 = 869. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 261 + 714 = 975. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 42 × 69 = 2900. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 85 × 45 = 3825. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 52 × 52 = 2704. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 345 + 532 = 869. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 550 + 773 = 1329. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 361 + 195 = 556. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 79 × 94 = 7426. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 952 + 431 = 1382. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 511 + 583 = 1094. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 943 + 803 = 1752. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 649 + 852 = 1501. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 902 + 781 = 1677. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 376 + 297 = 673. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 855 + 120 = 975. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 253 + 438 = 691. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 96 × 14 = 1344. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 988 + 704 = 1692. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 58 × 37 = 2138. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 320 + 463 = 783. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 537 + 218 = 755. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 94 × 76 = 7151. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 15 × 13 = 200. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 483 + 487 = 972. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 459 + 126 = 585. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 988 + 364 = 1352. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 33 × 59 = 1952. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 580 + 192 = 772. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 47 × 51 = 2397. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 970 + 761 = 1731. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 241 + 479 = 720. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 58 × 84 = 4865. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 16 × 74 = 1183. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 28 × 17 = 471. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 68 × 23 = 1564. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 42 × 13 = 550. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 312 + 265 = 577. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 453 + 705 = 1157. Correct or wrong? (a) correct (b) wrong

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