Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 627 · 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 667 + 130 = 797 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 81 × 44 = 3564 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 216 + 890 = 1109 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 37 × 70 = 2590 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 27 × 76 = 2052 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 261 + 729 = 992 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 68 × 89 = 6049 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 944 + 231 = 1178 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 23 × 49 = 1131 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 15 × 40 = 600 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 33 × 26 = 858 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 395 + 532 = 927 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 173 + 734 = 899 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 13 × 12 = 156 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 160 + 218 = 378 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 92 × 65 = 5980 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 87 × 26 = 2257 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 85 × 29 = 2465 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 19 × 57 = 1083 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 755 + 305 = 1055 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 95 × 91 = 8643 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 90 × 96 = 8640 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 256 + 630 = 883 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 85 × 84 = 7140 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 291 + 189 = 489 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 69 × 46 = 3174 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 422 + 732 = 1163 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 66 × 58 = 3826 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 169 + 194 = 369 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 42 × 50 = 2100 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 786 + 837 = 1618 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 183 + 664 = 838 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 13 × 26 = 338 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 77 × 33 = 2536 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 32 × 41 = 1312 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 87 × 66 = 5749 right or wrong? (a) Right (b) Wrong
37. 37.Last-digit check: is 76 × 36 = 2736 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 666 + 527 = 1189 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 672 + 941 = 1616 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 61 × 39 = 2374 right or wrong? (a) Wrong (b) Right

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