Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 851 · 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 524 + 365 = 889 right or wrong? (a) Right (b) Wrong
2. 2.Last-digit check: is 888 + 290 = 1181 right or wrong? (a) Right (b) Wrong
3. 3.Last-digit check: is 966 + 744 = 1710 right or wrong? (a) Right (b) Wrong
4. 4.Last-digit check: is 23 × 60 = 1380 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 23 × 89 = 2045 right or wrong? (a) Wrong (b) Right
6. 6.Last-digit check: is 931 + 674 = 1608 right or wrong? (a) Wrong (b) Right
7. 7.Last-digit check: is 98 × 75 = 7344 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 91 × 35 = 3185 right or wrong? (a) Right (b) Wrong
9. 9.Last-digit check: is 28 × 78 = 2184 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 90 × 64 = 5762 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 65 × 95 = 6175 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 761 + 847 = 1599 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 282 + 241 = 516 right or wrong? (a) Wrong (b) Right
14. 14.Last-digit check: is 89 × 41 = 3643 right or wrong? (a) Right (b) Wrong
15. 15.Last-digit check: is 932 + 769 = 1696 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 83 × 59 = 4905 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 601 + 458 = 1052 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 247 + 959 = 1206 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 229 + 137 = 370 right or wrong? (a) Right (b) Wrong
20. 20.Last-digit check: is 39 × 84 = 3276 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 71 × 76 = 5396 right or wrong? (a) Wrong (b) Right
22. 22.Last-digit check: is 27 × 74 = 1998 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 554 + 739 = 1293 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 751 + 560 = 1304 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 966 + 302 = 1268 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 164 + 997 = 1161 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 530 + 650 = 1186 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 14 × 78 = 1092 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 295 + 959 = 1254 right or wrong? (a) Wrong (b) Right
30. 30.Last-digit check: is 991 + 177 = 1168 right or wrong? (a) Wrong (b) Right
31. 31.Last-digit check: is 67 × 86 = 5762 right or wrong? (a) Right (b) Wrong
32. 32.Last-digit check: is 716 + 154 = 870 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 42 × 30 = 1260 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 581 + 171 = 750 right or wrong? (a) Wrong (b) Right
35. 35.Last-digit check: is 13 × 21 = 271 right or wrong? (a) Right (b) Wrong
36. 36.Last-digit check: is 64 × 91 = 5818 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 92 × 13 = 1189 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 972 + 739 = 1711 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 25 × 19 = 475 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 38 × 21 = 798 right or wrong? (a) Wrong (b) Right

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