Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 591 · 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: 50 × 75 = 3748. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 203 + 195 = 398. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 57 × 52 = 2964. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 744 + 546 = 1290. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 71 × 52 = 3694. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 97 × 23 = 2223. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 12 × 14 = 171. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 42 × 34 = 1428. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 121 + 924 = 1045. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 590 + 278 = 868. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 959 + 249 = 1203. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 87 × 18 = 1566. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 564 + 789 = 1352. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 94 × 97 = 9119. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 686 + 312 = 999. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 323 + 982 = 1305. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 954 + 772 = 1726. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 411 + 206 = 618. Correct or wrong? (a) correct (b) wrong
19. 19.Check with nines: 672 + 630 = 1302. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 21 × 16 = 336. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 45 × 69 = 3105. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 390 + 925 = 1315. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 494 + 889 = 1383. Correct or wrong? (a) correct (b) wrong
24. 24.Check with nines: 26 × 86 = 2230. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 78 × 26 = 2028. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 37 × 49 = 1813. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 19 × 27 = 515. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 12 × 52 = 624. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 645 + 395 = 1042. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 52 × 37 = 1927. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 24 × 31 = 744. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 32 × 41 = 1308. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 42 × 41 = 1717. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 51 × 79 = 4023. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 840 + 816 = 1656. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 16 × 54 = 868. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 76 × 15 = 1135. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 46 × 80 = 3680. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 394 + 611 = 1001. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 220 + 659 = 877. Correct or wrong? (a) correct (b) wrong

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