Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 272 · 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 588 + 430 = 1018 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 51 × 54 = 2754 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 701 + 426 = 1127 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 274 + 356 = 638 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 67 × 46 = 3082 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 487 + 715 = 1202 right or wrong? (a) Right (b) Wrong
7. 7.Last-digit check: is 43 × 60 = 2582 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 834 + 712 = 1549 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 98 × 33 = 3235 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 905 + 139 = 1044 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 52 × 86 = 4480 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 647 + 241 = 895 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 77 × 89 = 6850 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 37 × 70 = 2590 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 126 + 344 = 470 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 90 × 84 = 7560 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 273 + 616 = 889 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 823 + 943 = 1766 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 82 × 68 = 5576 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 82 × 49 = 4018 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 845 + 820 = 1669 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 29 × 46 = 1334 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 380 + 792 = 1181 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 81 × 29 = 2355 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 74 × 99 = 7335 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 122 + 849 = 972 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 70 × 67 = 4693 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 67 × 92 = 6164 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 196 + 866 = 1055 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 144 + 585 = 726 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 97 × 28 = 2716 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 27 × 20 = 540 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 435 + 390 = 831 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 26 × 35 = 912 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 26 × 83 = 2157 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 754 + 199 = 953 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 43 × 31 = 1337 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 21 × 40 = 840 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 137 + 683 = 820 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 452 + 873 = 1325 right or wrong? (a) Right (b) Wrong

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