Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 678 · 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: 83 × 50 = 4150. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 829 + 454 = 1275. Correct or wrong? (a) correct (b) wrong
3. 3.Check with nines: 50 × 99 = 4957. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 331 + 529 = 860. Correct or wrong? (a) wrong (b) correct
5. 5.Check with nines: 965 + 351 = 1316. Correct or wrong? (a) correct (b) wrong
6. 6.Check with nines: 350 + 808 = 1162. Correct or wrong? (a) wrong (b) correct
7. 7.Check with nines: 203 + 244 = 447. Correct or wrong? (a) wrong (b) correct
8. 8.Check with nines: 479 + 601 = 1076. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 54 × 76 = 4104. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 891 + 872 = 1760. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 890 + 855 = 1741. Correct or wrong? (a) wrong (b) correct
12. 12.Check with nines: 460 + 438 = 897. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 257 + 735 = 992. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 60 × 25 = 1505. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 279 + 822 = 1101. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 61 × 15 = 907. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 22 × 28 = 614. Correct or wrong? (a) correct (b) wrong
18. 18.Check with nines: 739 + 826 = 1565. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 785 + 689 = 1474. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 245 + 486 = 734. Correct or wrong? (a) correct (b) wrong
21. 21.Check with nines: 83 × 15 = 1245. Correct or wrong? (a) wrong (b) correct
22. 22.Check with nines: 56 × 77 = 4308. Correct or wrong? (a) correct (b) wrong
23. 23.Check with nines: 838 + 563 = 1401. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 70 × 25 = 1750. Correct or wrong? (a) correct (b) wrong
25. 25.Check with nines: 74 × 48 = 3552. Correct or wrong? (a) wrong (b) correct
26. 26.Check with nines: 504 + 157 = 661. Correct or wrong? (a) wrong (b) correct
27. 27.Check with nines: 682 + 322 = 1004. Correct or wrong? (a) correct (b) wrong
28. 28.Check with nines: 352 + 834 = 1186. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 93 × 96 = 8931. Correct or wrong? (a) wrong (b) correct
30. 30.Check with nines: 528 + 665 = 1193. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 689 + 206 = 895. Correct or wrong? (a) wrong (b) correct
32. 32.Check with nines: 35 × 87 = 3045. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 779 + 769 = 1548. Correct or wrong? (a) wrong (b) correct
34. 34.Check with nines: 881 + 665 = 1546. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 63 × 65 = 4095. Correct or wrong? (a) correct (b) wrong
36. 36.Check with nines: 73 × 15 = 1100. Correct or wrong? (a) wrong (b) correct
37. 37.Check with nines: 81 × 91 = 7371. Correct or wrong? (a) wrong (b) correct
38. 38.Check with nines: 51 × 22 = 1122. Correct or wrong? (a) correct (b) wrong
39. 39.Check with nines: 14 × 19 = 269. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 52 × 36 = 1872. Correct or wrong? (a) wrong (b) correct

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