Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 948 · 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: 70 × 62 = 4346. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 62 × 16 = 993. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 298 + 842 = 1140. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 739 + 842 = 1582. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 44 × 24 = 1057. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 916 + 928 = 1844. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 464 + 385 = 842. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 69 × 18 = 1243. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 680 + 937 = 1617. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 562 + 546 = 1108. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 838 + 631 = 1472. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 540 + 585 = 1118. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 84 × 40 = 3360. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 995 + 981 = 1976. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 21 × 26 = 546. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 701 + 384 = 1078. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 28 × 36 = 1008. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 31 × 19 = 589. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 544 + 673 = 1210. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 31 × 20 = 622. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 32 × 74 = 2368. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 42 × 44 = 1853. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 376 + 624 = 994. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 99 × 46 = 4547. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 705 + 394 = 1099. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 30 × 74 = 2227. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 743 + 864 = 1607. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 230 + 605 = 838. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 19 × 35 = 665. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 16 × 16 = 263. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 527 + 334 = 861. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 800 + 203 = 1005. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 194 + 916 = 1110. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 21 × 26 = 546. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 22 × 82 = 1804. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 36 × 23 = 828. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 91 × 73 = 6643. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 385 + 467 = 852. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 319 + 722 = 1041. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 648 + 792 = 1435. Correct or wrong? (a) correct (b) wrong

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