Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 443 · 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 822 + 474 = 1290 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 50 × 71 = 3550 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 54 × 12 = 648 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 547 + 255 = 802 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 974 + 947 = 1913 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 290 + 484 = 774 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 702 + 457 = 1157 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 55 × 86 = 4725 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 119 + 452 = 571 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 68 × 84 = 5716 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 21 × 68 = 1428 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 690 + 650 = 1340 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 12 × 14 = 177 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 908 + 927 = 1835 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 893 + 275 = 1168 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 95 × 46 = 4367 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 252 + 222 = 480 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 944 + 907 = 1849 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 29 × 14 = 410 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 336 + 926 = 1262 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 864 + 762 = 1626 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 14 × 30 = 420 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 65 × 64 = 4160 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 963 + 389 = 1352 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 42 × 55 = 2310 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 81 × 52 = 4212 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 848 + 596 = 1444 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 36 × 74 = 2664 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 997 + 494 = 1491 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 95 × 87 = 8259 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 909 + 403 = 1312 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 740 + 324 = 1059 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 19 × 33 = 624 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 763 + 834 = 1598 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 53 × 86 = 4558 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 65 × 70 = 4550 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 918 + 556 = 1474 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 90 × 18 = 1620 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 923 + 946 = 1862 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 354 + 213 = 565 right or wrong? (a) Wrong (b) Right

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