Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 370 · 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: 55 × 48 = 2640. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 23 × 62 = 1426. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 572 + 650 = 1214. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 866 + 972 = 1830. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 58 × 71 = 4118. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 376 + 941 = 1317. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 869 + 252 = 1124. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 88 × 33 = 2904. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 172 + 393 = 565. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 204 + 767 = 971. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 960 + 523 = 1483. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 736 + 245 = 978. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 996 + 982 = 1977. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 26 × 70 = 1820. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 22 × 14 = 308. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 879 + 465 = 1339. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 77 × 30 = 2310. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 502 + 741 = 1243. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 73 × 76 = 5548. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 87 × 56 = 4872. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 50 × 99 = 4942. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 258 + 308 = 566. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 50 × 54 = 2696. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 711 + 936 = 1646. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 13 × 60 = 780. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 387 + 491 = 878. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 55 × 88 = 4840. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 69 × 34 = 2354. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 68 × 44 = 2992. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 87 × 92 = 8012. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 45 × 62 = 2790. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 990 + 320 = 1304. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 20 × 70 = 1400. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 69 × 18 = 1239. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 60 × 50 = 3000. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 52 × 79 = 4113. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 20 × 32 = 640. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 300 + 668 = 969. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 52 × 58 = 3016. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 36 × 93 = 3341. Correct or wrong? (a) wrong (b) correct

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