Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 505 · 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 340 + 686 = 1026 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 30 × 51 = 1528 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 60 × 87 = 5220 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 808 + 455 = 1254 right or wrong? (a) Right (b) Wrong
5. 5.Last-digit check: is 98 × 32 = 3133 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 63 × 53 = 3330 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 654 + 119 = 781 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 89 × 60 = 5340 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 80 × 19 = 1519 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 91 × 14 = 1274 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 73 × 74 = 5402 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 83 × 69 = 5727 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 99 × 83 = 8217 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 326 + 149 = 475 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 37 × 13 = 481 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 115 + 959 = 1069 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 32 × 89 = 2848 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 933 + 260 = 1198 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 96 × 92 = 8832 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 76 × 54 = 4101 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 22 × 92 = 2027 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 500 + 810 = 1301 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 151 + 733 = 884 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 59 × 53 = 3118 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 70 × 22 = 1541 right or wrong? (a) Right (b) Wrong
26. 26.Last-digit check: is 879 + 289 = 1166 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 28 × 45 = 1252 right or wrong? (a) Wrong (b) Right
28. 28.Last-digit check: is 31 × 86 = 2666 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 17 × 73 = 1239 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 193 + 239 = 434 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 58 × 42 = 2442 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 238 + 716 = 956 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 26 × 82 = 2132 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 59 × 37 = 2183 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 79 × 36 = 2853 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 132 + 858 = 987 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 814 + 180 = 994 right or wrong? (a) Wrong (b) Right
38. 38.Last-digit check: is 900 + 971 = 1871 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 943 + 217 = 1160 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 182 + 115 = 297 right or wrong? (a) Wrong (b) Right

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