Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 171 · 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 98 × 37 = 3627 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 561 + 699 = 1257 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 36 × 92 = 3312 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 268 + 992 = 1260 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 955 + 305 = 1251 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 27 × 60 = 1616 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 976 + 989 = 1962 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 74 × 44 = 3256 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 82 × 57 = 4673 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 719 + 239 = 958 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 181 + 400 = 581 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 35 × 32 = 1111 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 886 + 144 = 1033 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 12 × 72 = 868 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 53 × 70 = 3708 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 21 × 61 = 1281 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 167 + 733 = 900 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 32 × 95 = 3040 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 960 + 491 = 1451 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 601 + 609 = 1210 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 695 + 607 = 1302 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 32 × 67 = 2144 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 66 × 75 = 4941 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 16 × 98 = 1568 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 837 + 115 = 945 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 392 + 173 = 565 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 785 + 309 = 1089 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 46 × 15 = 692 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 482 + 971 = 1453 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 48 × 42 = 2016 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 67 × 73 = 4885 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 43 × 93 = 4007 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 412 + 122 = 534 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 58 × 92 = 5334 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 951 + 119 = 1077 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 216 + 574 = 799 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 82 × 34 = 2780 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 902 + 568 = 1462 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 518 + 927 = 1442 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 345 + 754 = 1099 right or wrong? (a) Right (b) Wrong

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