Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 183 · 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 895 + 531 = 1424 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 858 + 108 = 973 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 887 + 905 = 1792 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 181 + 802 = 983 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 59 × 33 = 1942 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 378 + 470 = 857 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 133 + 256 = 389 right or wrong? (a) Right (b) Wrong
8. 8.Last-digit check: is 31 × 72 = 2232 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 230 + 307 = 542 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 921 + 646 = 1561 right or wrong? (a) Right (b) Wrong
11. 11.Last-digit check: is 949 + 469 = 1418 right or wrong? (a) Wrong (b) Right
12. 12.Last-digit check: is 61 × 40 = 2440 right or wrong? (a) Wrong (b) Right
13. 13.Last-digit check: is 728 + 159 = 889 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 472 + 469 = 941 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 592 + 719 = 1310 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 80 × 71 = 5680 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 126 + 318 = 446 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 859 + 452 = 1311 right or wrong? (a) Wrong (b) Right
19. 19.Last-digit check: is 543 + 762 = 1305 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 417 + 736 = 1150 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 149 + 218 = 362 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 668 + 389 = 1057 right or wrong? (a) Wrong (b) Right
23. 23.Last-digit check: is 839 + 170 = 1009 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 94 × 58 = 5452 right or wrong? (a) Right (b) Wrong
25. 25.Last-digit check: is 32 × 95 = 3040 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 331 + 719 = 1050 right or wrong? (a) Wrong (b) Right
27. 27.Last-digit check: is 865 + 569 = 1434 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 899 + 369 = 1274 right or wrong? (a) Right (b) Wrong
29. 29.Last-digit check: is 65 × 66 = 4283 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 71 × 97 = 6887 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 343 + 991 = 1334 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 29 × 37 = 1073 right or wrong? (a) Right (b) Wrong
33. 33.Last-digit check: is 27 × 67 = 1809 right or wrong? (a) Right (b) Wrong
34. 34.Last-digit check: is 500 + 614 = 1119 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 76 × 58 = 4408 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 73 × 73 = 5329 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 23 × 96 = 2208 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 22 × 24 = 528 right or wrong? (a) Right (b) Wrong
39. 39.Last-digit check: is 94 × 61 = 5739 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 62 × 33 = 2046 right or wrong? (a) Right (b) Wrong

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