Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 668 · 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: 850 + 977 = 1827. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 80 × 96 = 7680. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 57 × 73 = 4161. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 86 × 88 = 7569. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 554 + 379 = 941. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 98 × 26 = 2548. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 12 × 46 = 552. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 247 + 887 = 1132. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 335 + 219 = 554. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 35 × 39 = 1365. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 796 + 194 = 985. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 17 × 72 = 1230. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 554 + 575 = 1128. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 33 × 68 = 2244. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 774 + 347 = 1121. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 68 × 62 = 4220. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 251 + 938 = 1189. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 809 + 652 = 1461. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 138 + 367 = 505. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 683 + 633 = 1309. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 15 × 95 = 1420. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 561 + 493 = 1056. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 83 × 72 = 5976. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 79 × 24 = 1893. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 156 + 720 = 876. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 20 × 67 = 1348. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 82 × 72 = 5904. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 418 + 222 = 640. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 297 + 790 = 1086. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 762 + 329 = 1092. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 86 × 36 = 3101. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 137 + 920 = 1058. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 41 × 89 = 3651. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 73 × 32 = 2336. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 580 + 468 = 1048. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 357 + 491 = 848. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 202 + 816 = 1019. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 96 × 51 = 4895. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 14 × 22 = 308. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 36 × 70 = 2513. Correct or wrong? (a) correct (b) wrong

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