Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 972 · 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 579 + 594 = 1179 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 43 × 80 = 3440 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 430 + 997 = 1427 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 90 × 36 = 3244 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 31 × 31 = 961 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 17 × 38 = 640 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 580 + 704 = 1286 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 33 × 43 = 1411 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 714 + 601 = 1310 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 171 + 339 = 503 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 902 + 866 = 1768 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 32 × 57 = 1822 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 592 + 726 = 1318 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 539 + 396 = 935 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 44 × 23 = 1012 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 43 × 44 = 1894 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 627 + 154 = 774 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 70 × 24 = 1680 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 947 + 848 = 1795 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 269 + 293 = 562 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 127 + 862 = 989 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 96 × 33 = 3173 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 99 × 41 = 4052 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 92 × 76 = 7000 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 580 + 249 = 829 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 38 × 46 = 1748 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 155 + 711 = 870 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 36 × 13 = 470 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 81 × 18 = 1449 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 74 × 14 = 1035 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 667 + 990 = 1657 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 730 + 956 = 1695 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 36 × 46 = 1657 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 185 + 728 = 913 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 18 × 56 = 1008 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 36 × 37 = 1335 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 676 + 435 = 1111 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 47 × 18 = 841 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 49 × 97 = 4753 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 87 × 61 = 5307 right or wrong? (a) Wrong (b) Right

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