Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 591 · 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 356 + 932 = 1297 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 54 × 30 = 1620 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 885 + 682 = 1567 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 39 × 14 = 537 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 95 × 59 = 5605 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 528 + 585 = 1116 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 22 × 74 = 1628 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 34 × 33 = 1122 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 351 + 840 = 1186 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 83 × 95 = 7884 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 636 + 942 = 1581 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 72 × 80 = 5758 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 37 × 76 = 2813 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 669 + 604 = 1273 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 198 + 342 = 537 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 904 + 438 = 1342 right or wrong? (a) Right (b) Wrong
17. 17.Last-digit check: is 390 + 806 = 1196 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 70 × 33 = 2318 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 57 × 59 = 3363 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 81 × 64 = 5184 right or wrong? (a) Right (b) Wrong
21. 21.Last-digit check: is 657 + 583 = 1240 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 986 + 604 = 1581 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 59 × 86 = 5074 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 267 + 175 = 442 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 40 × 34 = 1360 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 963 + 466 = 1420 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 79 × 36 = 2848 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 14 × 50 = 700 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 30 × 22 = 660 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 13 × 27 = 351 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 265 + 118 = 383 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 34 × 44 = 1502 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 671 + 721 = 1397 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 89 × 47 = 4179 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 540 + 675 = 1215 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 592 + 712 = 1312 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 23 × 70 = 1609 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 456 + 959 = 1407 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 79 × 90 = 7110 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 183 + 727 = 902 right or wrong? (a) Right (b) Wrong

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