Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 347 · 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: 385 + 595 = 980. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 207 + 369 = 579. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 680 + 255 = 930. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 81 × 87 = 7051. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 29 × 52 = 1506. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 28 × 27 = 755. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 12 × 19 = 228. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 281 + 868 = 1150. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 217 + 577 = 794. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 94 × 84 = 7892. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 86 × 66 = 5676. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 41 × 50 = 2050. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 985 + 768 = 1753. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 471 + 599 = 1070. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 54 × 50 = 2700. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 15 × 18 = 270. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 903 + 614 = 1517. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 15 × 12 = 185. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 15 × 43 = 645. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 793 + 327 = 1120. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 908 + 293 = 1201. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 52 × 31 = 1612. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 180 + 216 = 396. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 54 × 26 = 1411. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 45 × 21 = 942. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 30 × 86 = 2583. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 81 × 50 = 4042. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 255 + 239 = 494. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 699 + 886 = 1585. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 30 × 29 = 870. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 20 × 57 = 1140. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 179 + 669 = 848. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 41 × 12 = 495. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 349 + 856 = 1212. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 17 × 90 = 1528. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 221 + 941 = 1162. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 667 + 460 = 1127. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 22 × 63 = 1386. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 33 × 84 = 2767. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 756 + 438 = 1194. Correct or wrong? (a) wrong (b) correct

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