Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 383 · 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: 96 × 85 = 8159. Correct or wrong? (a) correct (b) wrong
2. 2.Check with nines: 79 × 97 = 7661. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 764 + 639 = 1403. Correct or wrong? (a) correct (b) wrong
4. 4.Check with nines: 239 + 761 = 1000. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 143 + 191 = 342. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 75 × 83 = 6225. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 208 + 432 = 640. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 42 × 75 = 3150. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 27 × 24 = 648. Correct or wrong? (a) wrong (b) correct
10. 10.Check with nines: 28 × 85 = 2380. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 512 + 662 = 1174. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 298 + 957 = 1255. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 68 × 20 = 1360. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 342 + 622 = 964. Correct or wrong? (a) wrong (b) correct
15. 15.Check with nines: 60 × 72 = 4321. Correct or wrong? (a) correct (b) wrong
16. 16.Check with nines: 87 × 18 = 1566. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 362 + 934 = 1296. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 399 + 764 = 1166. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 39 × 29 = 1135. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 85 × 66 = 5610. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 330 + 368 = 692. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 921 + 500 = 1429. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 755 + 735 = 1498. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 748 + 435 = 1186. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 54 × 28 = 1512. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 280 + 375 = 661. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 191 + 874 = 1065. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 837 + 593 = 1430. Correct or wrong? (a) wrong (b) correct
29. 29.Check with nines: 255 + 343 = 598. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 569 + 966 = 1535. Correct or wrong? (a) correct (b) wrong
31. 31.Check with nines: 329 + 503 = 834. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 942 + 148 = 1093. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 28 × 26 = 728. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 34 × 59 = 2006. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 326 + 278 = 605. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 425 + 775 = 1200. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 30 × 84 = 2520. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 284 + 182 = 466. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 48 × 91 = 4370. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 814 + 658 = 1472. Correct or wrong? (a) correct (b) wrong

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