Check Your Answers Worksheet

Maths tricks trick 22: Last-digit detective · Set 594 · 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 982 + 271 = 1253 right or wrong? (a) Wrong (b) Right
2. 2.Last-digit check: is 35 × 45 = 1584 right or wrong? (a) Wrong (b) Right
3. 3.Last-digit check: is 530 + 348 = 878 right or wrong? (a) Wrong (b) Right
4. 4.Last-digit check: is 914 + 369 = 1289 right or wrong? (a) Wrong (b) Right
5. 5.Last-digit check: is 36 × 35 = 1261 right or wrong? (a) Right (b) Wrong
6. 6.Last-digit check: is 27 × 84 = 2268 right or wrong? (a) Right (b) Wrong
7. 7.Last-digit check: is 761 + 446 = 1207 right or wrong? (a) Wrong (b) Right
8. 8.Last-digit check: is 468 + 655 = 1116 right or wrong? (a) Wrong (b) Right
9. 9.Last-digit check: is 38 × 75 = 2850 right or wrong? (a) Right (b) Wrong
10. 10.Last-digit check: is 98 × 47 = 4606 right or wrong? (a) Wrong (b) Right
11. 11.Last-digit check: is 145 + 301 = 446 right or wrong? (a) Right (b) Wrong
12. 12.Last-digit check: is 304 + 190 = 489 right or wrong? (a) Right (b) Wrong
13. 13.Last-digit check: is 91 × 85 = 7733 right or wrong? (a) Right (b) Wrong
14. 14.Last-digit check: is 36 × 20 = 712 right or wrong? (a) Wrong (b) Right
15. 15.Last-digit check: is 38 × 34 = 1292 right or wrong? (a) Right (b) Wrong
16. 16.Last-digit check: is 95 × 45 = 4275 right or wrong? (a) Wrong (b) Right
17. 17.Last-digit check: is 846 + 667 = 1513 right or wrong? (a) Right (b) Wrong
18. 18.Last-digit check: is 91 × 36 = 3276 right or wrong? (a) Right (b) Wrong
19. 19.Last-digit check: is 47 × 85 = 3996 right or wrong? (a) Wrong (b) Right
20. 20.Last-digit check: is 75 × 96 = 7200 right or wrong? (a) Wrong (b) Right
21. 21.Last-digit check: is 316 + 967 = 1283 right or wrong? (a) Right (b) Wrong
22. 22.Last-digit check: is 248 + 137 = 383 right or wrong? (a) Right (b) Wrong
23. 23.Last-digit check: is 81 × 73 = 5913 right or wrong? (a) Wrong (b) Right
24. 24.Last-digit check: is 35 × 84 = 2940 right or wrong? (a) Wrong (b) Right
25. 25.Last-digit check: is 469 + 170 = 639 right or wrong? (a) Wrong (b) Right
26. 26.Last-digit check: is 631 + 464 = 1095 right or wrong? (a) Right (b) Wrong
27. 27.Last-digit check: is 28 × 84 = 2353 right or wrong? (a) Right (b) Wrong
28. 28.Last-digit check: is 44 × 44 = 1936 right or wrong? (a) Wrong (b) Right
29. 29.Last-digit check: is 372 + 299 = 671 right or wrong? (a) Right (b) Wrong
30. 30.Last-digit check: is 840 + 912 = 1752 right or wrong? (a) Right (b) Wrong
31. 31.Last-digit check: is 985 + 700 = 1684 right or wrong? (a) Wrong (b) Right
32. 32.Last-digit check: is 280 + 352 = 632 right or wrong? (a) Wrong (b) Right
33. 33.Last-digit check: is 31 × 70 = 2161 right or wrong? (a) Wrong (b) Right
34. 34.Last-digit check: is 97 × 30 = 2910 right or wrong? (a) Right (b) Wrong
35. 35.Last-digit check: is 82 × 15 = 1230 right or wrong? (a) Wrong (b) Right
36. 36.Last-digit check: is 447 + 176 = 623 right or wrong? (a) Wrong (b) Right
37. 37.Last-digit check: is 257 + 320 = 582 right or wrong? (a) Right (b) Wrong
38. 38.Last-digit check: is 19 × 39 = 741 right or wrong? (a) Wrong (b) Right
39. 39.Last-digit check: is 498 + 770 = 1272 right or wrong? (a) Right (b) Wrong
40. 40.Last-digit check: is 72 × 97 = 6985 right or wrong? (a) Wrong (b) Right

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