Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 91 · 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: 34 × 91 = 3094. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 77 × 93 = 7164. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 913 + 785 = 1691. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 541 + 261 = 807. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 36 × 70 = 2520. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 634 + 350 = 992. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 389 + 810 = 1197. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 52 × 41 = 2132. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 15 × 57 = 855. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 55 × 63 = 3465. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 38 × 86 = 3268. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 782 + 967 = 1746. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 201 + 600 = 801. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 87 × 94 = 8178. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 87 × 13 = 1133. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 865 + 287 = 1152. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 23 × 51 = 1173. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 23 × 15 = 345. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 329 + 293 = 622. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 13 × 59 = 771. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 921 + 891 = 1812. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 676 + 745 = 1421. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 18 × 96 = 1728. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 88 × 61 = 5365. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 327 + 565 = 892. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 14 × 98 = 1372. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 712 + 495 = 1212. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 45 × 29 = 1306. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 848 + 398 = 1243. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 292 + 990 = 1282. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 526 + 920 = 1446. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 592 + 536 = 1126. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 76 × 65 = 4940. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 325 + 367 = 693. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 60 × 55 = 3300. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 66 × 92 = 6080. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 78 × 21 = 1638. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 67 × 50 = 3350. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 69 × 37 = 2553. Correct or wrong? (a) correct (b) wrong
40. 40.Check with nines: 99 × 88 = 8712. Correct or wrong? (a) correct (b) wrong

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