Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 340 · 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: 56 × 80 = 4484. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 857 + 205 = 1062. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 99 × 62 = 6137. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 91 × 94 = 8559. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 808 + 197 = 1003. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 211 + 261 = 472. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 30 × 32 = 961. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 511 + 160 = 671. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 351 + 719 = 1078. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 21 × 62 = 1302. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 428 + 641 = 1069. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 523 + 185 = 708. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 301 + 308 = 613. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 36 × 56 = 2021. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 17 × 73 = 1233. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 92 × 12 = 1102. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 617 + 498 = 1115. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 702 + 306 = 1008. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 485 + 324 = 809. Correct or wrong? (a) correct (b) wrong
20. 20.Check with nines: 652 + 891 = 1543. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 565 + 808 = 1373. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 942 + 689 = 1625. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 177 + 604 = 784. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 90 × 78 = 7020. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 12 × 46 = 552. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 32 × 36 = 1152. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 53 × 63 = 3343. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 22 × 22 = 484. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 28 × 64 = 1792. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 36 × 64 = 2304. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 363 + 872 = 1235. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 27 × 80 = 2155. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 63 × 31 = 1954. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 22 × 40 = 881. Correct or wrong? (a) correct (b) wrong
35. 35.Check with nines: 29 × 18 = 524. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 584 + 945 = 1529. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 921 + 505 = 1426. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 227 + 442 = 662. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 422 + 300 = 715. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 16 × 71 = 1142. Correct or wrong? (a) correct (b) wrong

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