Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 327 · 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 407 + 514 = 926 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 66 × 41 = 2713 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 590 + 215 = 805 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 95 × 91 = 8650 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 80 × 17 = 1356 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 59 × 13 = 764 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 13 × 59 = 767 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 607 + 714 = 1321 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 561 + 237 = 798 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 19 × 43 = 819 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 29 × 51 = 1479 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 625 + 117 = 742 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 77 × 52 = 4006 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 23 × 18 = 414 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 882 + 159 = 1038 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 64 × 35 = 2240 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 375 + 474 = 849 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 307 + 551 = 858 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 836 + 132 = 968 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 13 × 66 = 858 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 443 + 937 = 1374 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 41 × 13 = 541 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 21 × 85 = 1782 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 809 + 896 = 1702 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 55 × 32 = 1760 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 46 × 26 = 1195 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 908 + 257 = 1165 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 25 × 53 = 1320 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 43 × 76 = 3268 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 31 × 89 = 2757 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 725 + 838 = 1563 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 40 × 21 = 845 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 43 × 48 = 2068 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 93 × 74 = 6882 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 33 × 29 = 957 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 233 + 312 = 545 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 81 × 77 = 6237 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 979 + 645 = 1624 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 12 × 91 = 1092 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 97 × 32 = 3109 right or wrong? (a) Right (b) Wrong

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