Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 457 · 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 110 + 725 = 835 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 63 × 15 = 940 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 59 × 73 = 4310 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 157 + 377 = 534 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 639 + 385 = 1022 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 464 + 591 = 1055 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 17 × 68 = 1150 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 22 × 26 = 572 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 58 × 93 = 5394 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 675 + 482 = 1157 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 726 + 238 = 964 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 209 + 883 = 1092 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 692 + 922 = 1611 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 86 × 51 = 4395 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 24 × 91 = 2184 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 64 × 15 = 966 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 75 × 20 = 1501 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 13 × 44 = 564 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 114 + 155 = 269 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 733 + 592 = 1325 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 17 × 59 = 1009 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 830 + 456 = 1277 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 37 × 64 = 2368 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 704 + 220 = 924 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 587 + 431 = 1019 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 36 × 93 = 3342 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 29 × 65 = 1886 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 991 + 700 = 1689 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 49 × 92 = 4508 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 59 × 19 = 1121 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 56 × 15 = 848 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 87 × 28 = 2436 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 479 + 438 = 926 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 388 + 245 = 633 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 222 + 595 = 817 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 894 + 813 = 1707 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 711 + 532 = 1243 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 67 × 13 = 873 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 366 + 972 = 1338 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 68 × 40 = 2720 right or wrong? (a) Right (b) Wrong

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