Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 507 · 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. 1.0.31 × 8 — where does the decimal point go? (a) 0.0248 (b) 0.248 (c) 2.48 (d) 24.8
2. 2.1.5 × 0.7 — where does the decimal point go? (a) 0.105 (b) 0.0105 (c) 1.05 (d) 10.5
3. 3.9.2 × 0.8 — where does the decimal point go? (a) 7.36 (b) 0.736 (c) 73.6 (d) 0.0736
4. 4.2.2 × 3 — where does the decimal point go? (a) 6.6 (b) 66 (c) 0.066 (d) 0.66
5. 5.0.78 × 29 — where does the decimal point go? (a) 2.262 (b) 0.2262 (c) 22.62 (d) 226.2
6. 6.0.13 × 3.1 — where does the decimal point go? (a) 0.403 (b) 0.00403 (c) 0.0403 (d) 4.03
7. 7.7.9 × 8 — where does the decimal point go? (a) 6.32 (b) 632 (c) 0.632 (d) 63.2
8. 8.0.88 × 9 — where does the decimal point go? (a) 0.0792 (b) 7.92 (c) 0.792 (d) 79.2
9. 9.2.2 × 1.6 — where does the decimal point go? (a) 35.2 (b) 0.0352 (c) 0.352 (d) 3.52
10. 10.7.6 × 1.1 — where does the decimal point go? (a) 0.0836 (b) 83.6 (c) 8.36 (d) 0.836
11. 11.9.6 × 0.8 — where does the decimal point go? (a) 0.0768 (b) 0.768 (c) 76.8 (d) 7.68
12. 12.6.9 × 2.5 — where does the decimal point go? (a) 0.1725 (b) 1.725 (c) 172.5 (d) 17.25
13. 13.0.91 × 0.5 — where does the decimal point go? (a) 0.455 (b) 0.0455 (c) 4.55 (d) 0.00455
14. 14.9.5 × 3.1 — where does the decimal point go? (a) 29.45 (b) 2.945 (c) 0.2945 (d) 294.5
15. 15.2.7 × 9 — where does the decimal point go? (a) 243 (b) 0.243 (c) 24.3 (d) 2.43
16. 16.0.14 × 2 — where does the decimal point go? (a) 2.8 (b) 0.028 (c) 0.0028 (d) 0.28
17. 17.2.1 × 2.3 — where does the decimal point go? (a) 0.483 (b) 4.83 (c) 0.0483 (d) 48.3
18. 18.6.8 × 7 — where does the decimal point go? (a) 4.76 (b) 476 (c) 0.476 (d) 47.6
19. 19.7.9 × 0.7 — where does the decimal point go? (a) 5.53 (b) 55.3 (c) 0.553 (d) 0.0553
20. 20.0.27 × 1.8 — where does the decimal point go? (a) 0.0486 (b) 0.486 (c) 0.00486 (d) 4.86
21. 21.0.95 × 9 — where does the decimal point go? (a) 0.855 (b) 0.0855 (c) 85.5 (d) 8.55
22. 22.7.1 × 8 — where does the decimal point go? (a) 5.68 (b) 0.568 (c) 56.8 (d) 568
23. 23.0.17 × 0.9 — where does the decimal point go? (a) 1.53 (b) 0.153 (c) 0.0153 (d) 0.00153
24. 24.0.32 × 8 — where does the decimal point go? (a) 0.0256 (b) 0.256 (c) 2.56 (d) 25.6
25. 25.0.36 × 12 — where does the decimal point go? (a) 43.2 (b) 4.32 (c) 0.0432 (d) 0.432
26. 26.0.25 × 0.7 — where does the decimal point go? (a) 1.75 (b) 0.175 (c) 0.0175 (d) 0.00175
27. 27.1.9 × 8 — where does the decimal point go? (a) 15.2 (b) 152 (c) 1.52 (d) 0.152
28. 28.0.83 × 6 — where does the decimal point go? (a) 4.98 (b) 0.0498 (c) 49.8 (d) 0.498
29. 29.9.1 × 27 — where does the decimal point go? (a) 2.457 (b) 24.57 (c) 245.7 (d) 2457
30. 30.0.79 × 2.1 — where does the decimal point go? (a) 1.659 (b) 0.1659 (c) 16.59 (d) 0.01659
31. 31.0.42 × 14 — where does the decimal point go? (a) 58.8 (b) 0.588 (c) 0.0588 (d) 5.88
32. 32.0.39 × 9 — where does the decimal point go? (a) 0.351 (b) 3.51 (c) 35.1 (d) 0.0351
33. 33.6.1 × 4 — where does the decimal point go? (a) 2.44 (b) 244 (c) 0.244 (d) 24.4
34. 34.7.4 × 0.9 — where does the decimal point go? (a) 66.6 (b) 0.0666 (c) 0.666 (d) 6.66
35. 35.5.8 × 19 — where does the decimal point go? (a) 1102 (b) 110.2 (c) 1.102 (d) 11.02
36. 36.6.2 × 3.7 — where does the decimal point go? (a) 0.2294 (b) 22.94 (c) 229.4 (d) 2.294
37. 37.8.5 × 3 — where does the decimal point go? (a) 25.5 (b) 0.255 (c) 255 (d) 2.55
38. 38.1.3 × 0.3 — where does the decimal point go? (a) 0.39 (b) 0.039 (c) 0.0039 (d) 3.9
39. 39.5.3 × 0.4 — where does the decimal point go? (a) 0.0212 (b) 2.12 (c) 21.2 (d) 0.212
40. 40.0.62 × 27 — where does the decimal point go? (a) 16.74 (b) 0.1674 (c) 167.4 (d) 1.674

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