Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 815 · 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 358 + 562 = 920 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 75 × 40 = 2995 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 375 + 113 = 482 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 609 + 201 = 810 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 53 × 89 = 4717 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 140 + 654 = 791 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 152 + 775 = 920 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 14 × 43 = 603 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 605 + 323 = 928 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 76 × 20 = 1520 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 12 × 80 = 960 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 47 × 45 = 2115 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 99 × 35 = 3465 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 79 × 49 = 3879 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 96 × 66 = 6336 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 37 × 83 = 3067 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 996 + 368 = 1364 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 13 × 53 = 698 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 97 × 93 = 9028 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 59 × 74 = 4359 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 188 + 160 = 344 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 74 × 32 = 2363 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 665 + 842 = 1500 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 81 × 18 = 1458 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 75 × 82 = 6150 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 67 × 72 = 4824 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 75 × 19 = 1434 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 437 + 502 = 946 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 58 × 74 = 4292 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 788 + 423 = 1211 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 56 × 89 = 4984 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 502 + 895 = 1397 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 843 + 384 = 1222 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 556 + 379 = 935 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 85 × 42 = 3570 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 74 × 24 = 1776 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 65 × 76 = 4949 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 707 + 523 = 1236 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 880 + 912 = 1793 right or wrong? (a) Wrong (b) Right
40. 40.Last-digit check: is 74 × 16 = 1181 right or wrong? (a) Right (b) Wrong

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