Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 639 · 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: 935 + 715 = 1650. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 55 × 84 = 4620. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 75 × 43 = 3232. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 432 + 972 = 1404. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 83 × 35 = 2905. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 509 + 638 = 1147. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 88 × 84 = 7386. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 241 + 849 = 1084. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 13 × 77 = 993. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 665 + 655 = 1313. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 887 + 352 = 1239. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 482 + 417 = 905. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 77 × 26 = 2002. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 279 + 133 = 412. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 157 + 969 = 1126. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 449 + 946 = 1387. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 26 × 41 = 1069. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 65 × 62 = 4031. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 78 × 30 = 2340. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 97 × 22 = 2134. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 330 + 338 = 661. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 56 × 97 = 5432. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 19 × 72 = 1370. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 184 + 937 = 1127. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 12 × 69 = 836. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 15 × 70 = 1045. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 551 + 348 = 899. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 136 + 834 = 969. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 976 + 178 = 1161. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 97 × 45 = 4369. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 967 + 475 = 1435. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 42 × 97 = 4073. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 87 × 62 = 5386. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 68 × 95 = 6460. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 36 × 89 = 3204. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 86 × 67 = 5762. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 202 + 258 = 459. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 58 × 40 = 2320. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 14 × 58 = 817. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 82 × 93 = 7618. Correct or wrong? (a) wrong (b) correct

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