Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 471 · 40 questions

The trick (Last digits only): Multiply (or add) only the last digits of the two numbers. The last digit of that result is the last digit the answer must have. Different last digit → wrong for sure. Same last digit → it passes the check (work it out in full to be certain).

1. 1.Last-digit check: is 96 × 38 = 3645 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 564 + 463 = 1027 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 504 + 927 = 1431 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 358 + 108 = 466 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 52 × 78 = 4059 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 98 × 76 = 7448 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 578 + 818 = 1396 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 30 × 81 = 2430 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 64 × 52 = 3328 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 126 + 724 = 854 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 29 × 45 = 1305 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 25 × 53 = 1330 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 200 + 111 = 315 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 669 + 499 = 1168 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 42 × 24 = 1009 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 511 + 591 = 1103 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 53 × 12 = 643 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 73 × 60 = 4380 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 632 + 257 = 889 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 782 + 122 = 908 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 480 + 699 = 1179 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 19 × 94 = 1783 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 24 × 59 = 1417 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 84 × 31 = 2604 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 48 × 42 = 2024 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 85 × 23 = 1955 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 432 + 740 = 1172 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 957 + 403 = 1360 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 543 + 443 = 987 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 572 + 111 = 675 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 38 × 79 = 3001 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 556 + 462 = 1018 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 29 × 76 = 2211 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 13 × 95 = 1235 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 162 + 117 = 284 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 540 + 242 = 781 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 453 + 866 = 1328 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 189 + 483 = 677 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 77 × 70 = 5390 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 94 × 49 = 4602 right or wrong? (a) Right (b) Wrong

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