Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 942 · 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 638 + 208 = 846 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 125 + 435 = 566 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 26 × 97 = 2522 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 311 + 284 = 600 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 13 × 57 = 735 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 77 × 39 = 3003 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 800 + 728 = 1528 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 74 × 79 = 5854 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 145 + 173 = 318 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 279 + 824 = 1095 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 347 + 705 = 1052 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 81 × 80 = 6489 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 873 + 661 = 1534 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 96 × 37 = 3552 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 111 + 519 = 630 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 12 × 41 = 486 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 51 × 96 = 4896 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 51 × 94 = 4798 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 96 × 36 = 3456 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 44 × 72 = 3168 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 32 × 66 = 2112 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 56 × 87 = 4864 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 537 + 955 = 1494 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 961 + 599 = 1561 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 69 × 27 = 1866 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 93 × 99 = 9210 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 24 × 78 = 1879 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 88 × 39 = 3424 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 43 × 48 = 2066 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 160 + 661 = 819 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 534 + 270 = 813 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 30 × 27 = 810 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 200 + 843 = 1045 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 20 × 16 = 325 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 58 × 89 = 5154 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 341 + 591 = 925 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 80 × 72 = 5756 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 902 + 325 = 1227 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 16 × 65 = 1032 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 24 × 54 = 1296 right or wrong? (a) Wrong (b) Right

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