Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 782 · 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. 1.0.72 × 1.7 — where does the decimal point go? (a) 0.1224 (b) 0.01224 (c) 1.224 (d) 12.24
2. 2.1.3 × 1.4 — where does the decimal point go? (a) 0.0182 (b) 0.182 (c) 18.2 (d) 1.82
3. 3.7.1 × 7 — where does the decimal point go? (a) 497 (b) 4.97 (c) 0.497 (d) 49.7
4. 4.0.32 × 7 — where does the decimal point go? (a) 2.24 (b) 0.0224 (c) 22.4 (d) 0.224
5. 5.0.19 × 3 — where does the decimal point go? (a) 0.0057 (b) 5.7 (c) 0.057 (d) 0.57
6. 6.0.66 × 24 — where does the decimal point go? (a) 15.84 (b) 0.1584 (c) 1.584 (d) 158.4
7. 7.0.99 × 0.3 — where does the decimal point go? (a) 0.00297 (b) 0.297 (c) 0.0297 (d) 2.97
8. 8.0.59 × 34 — where does the decimal point go? (a) 20.06 (b) 2.006 (c) 0.2006 (d) 200.6
9. 9.2.9 × 22 — where does the decimal point go? (a) 63.8 (b) 0.638 (c) 6.38 (d) 638
10. 10.0.21 × 0.2 — where does the decimal point go? (a) 0.42 (b) 0.042 (c) 0.0042 (d) 0.00042
11. 11.0.42 × 0.3 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 0.00126 (d) 0.126
12. 12.0.68 × 0.9 — where does the decimal point go? (a) 0.612 (b) 0.0612 (c) 0.00612 (d) 6.12
13. 13.0.58 × 0.3 — where does the decimal point go? (a) 0.00174 (b) 0.174 (c) 0.0174 (d) 1.74
14. 14.0.26 × 0.2 — where does the decimal point go? (a) 0.0052 (b) 0.52 (c) 0.00052 (d) 0.052
15. 15.4.7 × 1.2 — where does the decimal point go? (a) 0.0564 (b) 5.64 (c) 56.4 (d) 0.564
16. 16.0.53 × 0.5 — where does the decimal point go? (a) 0.265 (b) 2.65 (c) 0.0265 (d) 0.00265
17. 17.8.8 × 6 — where does the decimal point go? (a) 52.8 (b) 0.528 (c) 528 (d) 5.28
18. 18.4.7 × 2 — where does the decimal point go? (a) 9.4 (b) 0.094 (c) 0.94 (d) 94
19. 19.7.3 × 2.9 — where does the decimal point go? (a) 2.117 (b) 211.7 (c) 21.17 (d) 0.2117
20. 20.2.8 × 2.8 — where does the decimal point go? (a) 7.84 (b) 0.784 (c) 0.0784 (d) 78.4
21. 21.3.6 × 2 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 72 (d) 0.72
22. 22.9.1 × 36 — where does the decimal point go? (a) 32.76 (b) 3276 (c) 327.6 (d) 3.276
23. 23.0.12 × 0.9 — where does the decimal point go? (a) 1.08 (b) 0.108 (c) 0.00108 (d) 0.0108
24. 24.4.5 × 7 — where does the decimal point go? (a) 31.5 (b) 3.15 (c) 315 (d) 0.315
25. 25.9.8 × 0.8 — where does the decimal point go? (a) 0.0784 (b) 0.784 (c) 78.4 (d) 7.84
26. 26.0.81 × 24 — where does the decimal point go? (a) 0.1944 (b) 1.944 (c) 19.44 (d) 194.4
27. 27.0.69 × 7 — where does the decimal point go? (a) 48.3 (b) 4.83 (c) 0.483 (d) 0.0483
28. 28.3.1 × 6 — where does the decimal point go? (a) 18.6 (b) 0.186 (c) 1.86 (d) 186
29. 29.9.1 × 33 — where does the decimal point go? (a) 3.003 (b) 30.03 (c) 300.3 (d) 3003
30. 30.0.13 × 25 — where does the decimal point go? (a) 0.325 (b) 3.25 (c) 0.0325 (d) 32.5
31. 31.0.59 × 7 — where does the decimal point go? (a) 4.13 (b) 41.3 (c) 0.0413 (d) 0.413
32. 32.3.3 × 2 — where does the decimal point go? (a) 0.66 (b) 6.6 (c) 66 (d) 0.066
33. 33.0.14 × 0.6 — where does the decimal point go? (a) 0.00084 (b) 0.084 (c) 0.0084 (d) 0.84
34. 34.1.9 × 0.2 — where does the decimal point go? (a) 0.038 (b) 0.0038 (c) 3.8 (d) 0.38
35. 35.0.46 × 12 — where does the decimal point go? (a) 5.52 (b) 55.2 (c) 0.552 (d) 0.0552
36. 36.0.25 × 43 — where does the decimal point go? (a) 1.075 (b) 10.75 (c) 0.1075 (d) 107.5
37. 37.0.64 × 0.7 — where does the decimal point go? (a) 4.48 (b) 0.0448 (c) 0.448 (d) 0.00448
38. 38.0.24 × 3 — where does the decimal point go? (a) 0.072 (b) 0.72 (c) 0.0072 (d) 7.2
39. 39.0.98 × 0.9 — where does the decimal point go? (a) 0.00882 (b) 0.0882 (c) 8.82 (d) 0.882
40. 40.0.73 × 35 — where does the decimal point go? (a) 25.55 (b) 0.2555 (c) 255.5 (d) 2.555

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