Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 32 · 40 questions

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

1. 1.2.5 × 9 — where does the decimal point go? (a) 22.5 (b) 2.25 (c) 0.225 (d) 225
2. 2.0.76 × 0.4 — where does the decimal point go? (a) 0.00304 (b) 0.0304 (c) 0.304 (d) 3.04
3. 3.0.92 × 23 — where does the decimal point go? (a) 2.116 (b) 0.2116 (c) 21.16 (d) 211.6
4. 4.0.29 × 7 — where does the decimal point go? (a) 0.203 (b) 0.0203 (c) 20.3 (d) 2.03
5. 5.0.12 × 2.1 — where does the decimal point go? (a) 2.52 (b) 0.00252 (c) 0.0252 (d) 0.252
6. 6.4.1 × 9 — where does the decimal point go? (a) 36.9 (b) 3.69 (c) 0.369 (d) 369
7. 7.0.83 × 0.6 — where does the decimal point go? (a) 4.98 (b) 0.498 (c) 0.00498 (d) 0.0498
8. 8.9.9 × 31 — where does the decimal point go? (a) 30.69 (b) 3069 (c) 3.069 (d) 306.9
9. 9.2.1 × 3 — where does the decimal point go? (a) 6.3 (b) 0.63 (c) 0.063 (d) 63
10. 10.2.3 × 7 — where does the decimal point go? (a) 16.1 (b) 1.61 (c) 0.161 (d) 161
11. 11.0.65 × 7 — where does the decimal point go? (a) 4.55 (b) 0.455 (c) 45.5 (d) 0.0455
12. 12.0.47 × 0.3 — where does the decimal point go? (a) 0.00141 (b) 0.0141 (c) 0.141 (d) 1.41
13. 13.7.8 × 0.4 — where does the decimal point go? (a) 3.12 (b) 31.2 (c) 0.0312 (d) 0.312
14. 14.0.64 × 0.8 — where does the decimal point go? (a) 5.12 (b) 0.0512 (c) 0.512 (d) 0.00512
15. 15.0.51 × 4.1 — where does the decimal point go? (a) 0.02091 (b) 0.2091 (c) 20.91 (d) 2.091
16. 16.2.5 × 1.1 — where does the decimal point go? (a) 0.0275 (b) 27.5 (c) 0.275 (d) 2.75
17. 17.6.3 × 4.6 — where does the decimal point go? (a) 289.8 (b) 28.98 (c) 0.2898 (d) 2.898
18. 18.9.4 × 42 — where does the decimal point go? (a) 39.48 (b) 394.8 (c) 3.948 (d) 3948
19. 19.3.6 × 41 — where does the decimal point go? (a) 1.476 (b) 147.6 (c) 14.76 (d) 1476
20. 20.7.6 × 0.2 — where does the decimal point go? (a) 15.2 (b) 1.52 (c) 0.152 (d) 0.0152
21. 21.2.6 × 9 — where does the decimal point go? (a) 234 (b) 23.4 (c) 0.234 (d) 2.34
22. 22.3.1 × 9 — where does the decimal point go? (a) 27.9 (b) 2.79 (c) 0.279 (d) 279
23. 23.3.9 × 5 — where does the decimal point go? (a) 1.95 (b) 195 (c) 19.5 (d) 0.195
24. 24.0.57 × 3.2 — where does the decimal point go? (a) 1.824 (b) 18.24 (c) 0.1824 (d) 0.01824
25. 25.0.95 × 4.7 — where does the decimal point go? (a) 44.65 (b) 4.465 (c) 0.4465 (d) 0.04465
26. 26.7.2 × 24 — where does the decimal point go? (a) 172.8 (b) 1.728 (c) 1728 (d) 17.28
27. 27.0.44 × 8 — where does the decimal point go? (a) 0.0352 (b) 35.2 (c) 0.352 (d) 3.52
28. 28.0.88 × 0.7 — where does the decimal point go? (a) 0.616 (b) 0.00616 (c) 0.0616 (d) 6.16
29. 29.6.1 × 3.9 — where does the decimal point go? (a) 23.79 (b) 237.9 (c) 0.2379 (d) 2.379
30. 30.1.4 × 4 — where does the decimal point go? (a) 0.056 (b) 0.56 (c) 56 (d) 5.6
31. 31.0.96 × 34 — where does the decimal point go? (a) 3.264 (b) 32.64 (c) 326.4 (d) 0.3264
32. 32.7.1 × 17 — where does the decimal point go? (a) 12.07 (b) 120.7 (c) 1.207 (d) 1207
33. 33.0.24 × 32 — where does the decimal point go? (a) 76.8 (b) 7.68 (c) 0.0768 (d) 0.768
34. 34.8.3 × 4 — where does the decimal point go? (a) 33.2 (b) 332 (c) 3.32 (d) 0.332
35. 35.5.3 × 29 — where does the decimal point go? (a) 1537 (b) 1.537 (c) 153.7 (d) 15.37
36. 36.7.6 × 29 — where does the decimal point go? (a) 220.4 (b) 2204 (c) 2.204 (d) 22.04
37. 37.0.82 × 7 — where does the decimal point go? (a) 0.574 (b) 5.74 (c) 57.4 (d) 0.0574
38. 38.3.5 × 0.5 — where does the decimal point go? (a) 0.0175 (b) 0.175 (c) 1.75 (d) 17.5
39. 39.0.41 × 7 — where does the decimal point go? (a) 0.0287 (b) 28.7 (c) 2.87 (d) 0.287
40. 40.7.4 × 4 — where does the decimal point go? (a) 0.296 (b) 29.6 (c) 296 (d) 2.96

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