Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 786 · 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: 481 + 980 = 1458. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 572 + 790 = 1362. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 460 + 352 = 812. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 50 × 59 = 2957. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 501 + 414 = 922. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 19 × 72 = 1368. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 21 × 75 = 1575. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 43 × 87 = 3733. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 16 × 78 = 1240. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 47 × 65 = 3049. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 196 + 574 = 772. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 65 × 57 = 3705. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 183 + 179 = 362. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 196 + 420 = 610. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 88 × 28 = 2468. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 12 × 66 = 797. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 29 × 93 = 2704. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 741 + 389 = 1130. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 28 × 96 = 2688. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 85 × 72 = 6120. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 47 × 63 = 2961. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 611 + 134 = 737. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 563 + 938 = 1503. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 14 × 86 = 1204. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 61 × 17 = 1037. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 284 + 250 = 541. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 499 + 568 = 1074. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 21 × 21 = 433. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 779 + 333 = 1112. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 333 + 777 = 1104. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 91 × 45 = 4095. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 695 + 310 = 998. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 20 × 18 = 365. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 44 × 40 = 1755. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 589 + 317 = 902. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 580 + 930 = 1514. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 236 + 286 = 522. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 78 × 47 = 3666. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 800 + 572 = 1378. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 415 + 258 = 673. Correct or wrong? (a) correct (b) wrong

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