Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 971 · 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 206 + 153 = 359 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 114 + 671 = 794 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 20 × 12 = 240 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 324 + 293 = 617 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 538 + 257 = 795 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 943 + 150 = 1095 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 62 × 66 = 4091 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 23 × 59 = 1357 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 85 × 29 = 2465 right or wrong? (a) Wrong (b) Right
10. 10.Last-digit check: is 263 + 706 = 961 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 12 × 83 = 996 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 298 + 613 = 911 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 94 × 70 = 6580 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 683 + 250 = 933 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 845 + 788 = 1624 right or wrong? (a) Wrong (b) Right
16. 16.Last-digit check: is 99 × 42 = 4154 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 342 + 628 = 970 right or wrong? (a) Wrong (b) Right
18. 18.Last-digit check: is 238 + 425 = 672 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 438 + 458 = 890 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 20 × 28 = 566 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 17 × 25 = 425 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 380 + 450 = 822 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 60 × 48 = 2880 right or wrong? (a) Right (b) Wrong
24. 24.Last-digit check: is 86 × 29 = 2503 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 641 + 914 = 1555 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 19 × 49 = 937 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 16 × 93 = 1487 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 36 × 33 = 1192 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 667 + 578 = 1245 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 81 × 15 = 1215 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 271 + 549 = 820 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 183 + 734 = 917 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 16 × 12 = 192 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 928 + 780 = 1712 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 327 + 904 = 1227 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 364 + 317 = 681 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 937 + 829 = 1773 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 24 × 80 = 1920 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 402 + 948 = 1358 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 711 + 209 = 920 right or wrong? (a) Right (b) Wrong

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