Casting Out Nines Worksheet

Speed calculation lesson 13: Check it with nines · Set 105 · 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: 69 × 91 = 6278. Correct or wrong? (a) wrong (b) correct
2. 2.Check with nines: 995 + 166 = 1164. Correct or wrong? (a) wrong (b) correct
3. 3.Check with nines: 289 + 132 = 421. Correct or wrong? (a) wrong (b) correct
4. 4.Check with nines: 199 + 216 = 415. Correct or wrong? (a) correct (b) wrong
5. 5.Check with nines: 656 + 966 = 1617. Correct or wrong? (a) wrong (b) correct
6. 6.Check with nines: 236 + 548 = 784. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 767 + 586 = 1356. Correct or wrong? (a) correct (b) wrong
8. 8.Check with nines: 77 × 16 = 1240. Correct or wrong? (a) correct (b) wrong
9. 9.Check with nines: 865 + 778 = 1637. Correct or wrong? (a) correct (b) wrong
10. 10.Check with nines: 887 + 164 = 1045. Correct or wrong? (a) wrong (b) correct
11. 11.Check with nines: 40 × 40 = 1600. Correct or wrong? (a) correct (b) wrong
12. 12.Check with nines: 698 + 201 = 903. Correct or wrong? (a) correct (b) wrong
13. 13.Check with nines: 59 × 86 = 5068. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 529 + 326 = 857. Correct or wrong? (a) correct (b) wrong
15. 15.Check with nines: 961 + 186 = 1147. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 60 × 34 = 2042. Correct or wrong? (a) wrong (b) correct
17. 17.Check with nines: 518 + 815 = 1333. Correct or wrong? (a) wrong (b) correct
18. 18.Check with nines: 85 × 52 = 4418. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 603 + 712 = 1309. Correct or wrong? (a) wrong (b) correct
20. 20.Check with nines: 49 × 28 = 1370. Correct or wrong? (a) wrong (b) correct
21. 21.Check with nines: 965 + 373 = 1332. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 90 × 13 = 1170. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 44 × 34 = 1496. Correct or wrong? (a) wrong (b) correct
24. 24.Check with nines: 905 + 842 = 1746. Correct or wrong? (a) wrong (b) correct
25. 25.Check with nines: 64 × 46 = 2944. Correct or wrong? (a) correct (b) wrong
26. 26.Check with nines: 61 × 33 = 2013. Correct or wrong? (a) correct (b) wrong
27. 27.Check with nines: 265 + 584 = 849. Correct or wrong? (a) wrong (b) correct
28. 28.Check with nines: 20 × 63 = 1260. Correct or wrong? (a) correct (b) wrong
29. 29.Check with nines: 496 + 576 = 1072. Correct or wrong? (a) correct (b) wrong
30. 30.Check with nines: 29 × 67 = 1949. Correct or wrong? (a) wrong (b) correct
31. 31.Check with nines: 420 + 151 = 571. Correct or wrong? (a) correct (b) wrong
32. 32.Check with nines: 47 × 43 = 2021. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 823 + 486 = 1310. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 69 × 58 = 3999. Correct or wrong? (a) wrong (b) correct
35. 35.Check with nines: 591 + 389 = 980. Correct or wrong? (a) wrong (b) correct
36. 36.Check with nines: 94 × 77 = 7238. Correct or wrong? (a) correct (b) wrong
37. 37.Check with nines: 207 + 721 = 932. Correct or wrong? (a) correct (b) wrong
38. 38.Check with nines: 45 × 90 = 4050. Correct or wrong? (a) wrong (b) correct
39. 39.Check with nines: 707 + 838 = 1545. Correct or wrong? (a) wrong (b) correct
40. 40.Check with nines: 487 + 778 = 1265. Correct or wrong? (a) correct (b) wrong

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