Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 73 · 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 × 15 = 345. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 753 + 313 = 1064. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 577 + 971 = 1548. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 357 + 936 = 1293. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 43 × 42 = 1806. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 54 × 39 = 2106. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 341 + 345 = 678. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 18 × 31 = 558. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 817 + 836 = 1657. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 391 + 953 = 1344. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 57 × 22 = 1254. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 401 + 843 = 1249. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 72 × 72 = 5184. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 911 + 233 = 1141. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 81 × 54 = 4371. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 46 × 33 = 1526. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 666 + 531 = 1197. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 663 + 278 = 941. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 742 + 945 = 1687. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 70 × 92 = 6440. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 93 × 60 = 5588. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 240 + 896 = 1138. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 35 × 68 = 2383. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 902 + 841 = 1743. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 533 + 490 = 1023. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 196 + 313 = 509. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 62 × 81 = 5022. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 74 × 70 = 5181. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 153 + 613 = 770. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 26 × 97 = 2522. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 277 + 839 = 1112. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 63 × 46 = 2890. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 983 + 550 = 1533. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 928 + 285 = 1220. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 181 + 269 = 450. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 469 + 633 = 1102. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 520 + 384 = 907. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 75 × 13 = 975. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 37 × 66 = 2434. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 770 + 226 = 996. Correct or wrong? (a) wrong (b) correct

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