Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 456 · 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: 341 + 141 = 482. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 653 + 537 = 1190. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 50 × 84 = 4200. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 913 + 861 = 1781. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 88 × 43 = 3791. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 192 + 669 = 853. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 477 + 177 = 654. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 84 × 52 = 4366. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 923 + 196 = 1113. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 37 × 32 = 1184. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 33 × 43 = 1419. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 87 × 76 = 6612. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 46 × 39 = 1798. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 991 + 238 = 1229. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 25 × 92 = 2300. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 83 × 96 = 7973. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 764 + 280 = 1044. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 264 + 979 = 1246. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 831 + 850 = 1681. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 51 × 17 = 867. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 79 × 56 = 4424. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 689 + 248 = 937. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 47 × 16 = 747. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 262 + 534 = 796. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 727 + 717 = 1438. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 86 × 50 = 4300. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 754 + 489 = 1248. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 36 × 49 = 1758. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 76 × 45 = 3420. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 18 × 50 = 904. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 19 × 63 = 1197. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 223 + 328 = 550. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 577 + 510 = 1087. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 16 × 73 = 1169. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 285 + 490 = 775. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 72 × 32 = 2310. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 29 × 27 = 783. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 487 + 879 = 1366. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 768 + 183 = 951. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 49 × 42 = 2050. Correct or wrong? (a) wrong (b) correct

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