Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 161 · 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. 1.0.73 × 4.8 — where does the decimal point go? (a) 35.04 (b) 0.3504 (c) 0.03504 (d) 3.504
2. 2.5.6 × 4 — where does the decimal point go? (a) 2.24 (b) 224 (c) 22.4 (d) 0.224
3. 3.0.29 × 0.6 — where does the decimal point go? (a) 0.0174 (b) 1.74 (c) 0.00174 (d) 0.174
4. 4.4.9 × 4.5 — where does the decimal point go? (a) 0.2205 (b) 220.5 (c) 22.05 (d) 2.205
5. 5.0.28 × 3.1 — where does the decimal point go? (a) 0.00868 (b) 0.0868 (c) 8.68 (d) 0.868
6. 6.8.8 × 0.9 — where does the decimal point go? (a) 0.792 (b) 0.0792 (c) 79.2 (d) 7.92
7. 7.0.78 × 3.6 — where does the decimal point go? (a) 0.02808 (b) 2.808 (c) 28.08 (d) 0.2808
8. 8.3.6 × 4.6 — where does the decimal point go? (a) 16.56 (b) 0.1656 (c) 1.656 (d) 165.6
9. 9.3.4 × 1.9 — where does the decimal point go? (a) 0.646 (b) 64.6 (c) 0.0646 (d) 6.46
10. 10.0.14 × 0.3 — where does the decimal point go? (a) 0.00042 (b) 0.042 (c) 0.42 (d) 0.0042
11. 11.6.7 × 1.3 — where does the decimal point go? (a) 0.871 (b) 0.0871 (c) 8.71 (d) 87.1
12. 12.0.93 × 9 — where does the decimal point go? (a) 0.0837 (b) 8.37 (c) 83.7 (d) 0.837
13. 13.5.3 × 0.9 — where does the decimal point go? (a) 0.477 (b) 47.7 (c) 0.0477 (d) 4.77
14. 14.2.6 × 18 — where does the decimal point go? (a) 0.468 (b) 468 (c) 46.8 (d) 4.68
15. 15.0.14 × 4.8 — where does the decimal point go? (a) 0.672 (b) 0.0672 (c) 0.00672 (d) 6.72
16. 16.9.3 × 4.9 — where does the decimal point go? (a) 4.557 (b) 45.57 (c) 455.7 (d) 0.4557
17. 17.0.72 × 8 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 5.76 (d) 57.6
18. 18.1.6 × 2 — where does the decimal point go? (a) 0.032 (b) 0.32 (c) 3.2 (d) 32
19. 19.0.62 × 4.9 — where does the decimal point go? (a) 3.038 (b) 0.3038 (c) 0.03038 (d) 30.38
20. 20.3.8 × 0.8 — where does the decimal point go? (a) 3.04 (b) 0.0304 (c) 0.304 (d) 30.4
21. 21.6.2 × 17 — where does the decimal point go? (a) 105.4 (b) 10.54 (c) 1054 (d) 1.054
22. 22.9.3 × 2.5 — where does the decimal point go? (a) 2.325 (b) 232.5 (c) 0.2325 (d) 23.25
23. 23.4.3 × 42 — where does the decimal point go? (a) 1.806 (b) 1806 (c) 180.6 (d) 18.06
24. 24.2.6 × 13 — where does the decimal point go? (a) 338 (b) 33.8 (c) 0.338 (d) 3.38
25. 25.0.74 × 16 — where does the decimal point go? (a) 11.84 (b) 118.4 (c) 1.184 (d) 0.1184
26. 26.1.3 × 0.2 — where does the decimal point go? (a) 0.26 (b) 0.026 (c) 0.0026 (d) 2.6
27. 27.3.4 × 4.6 — where does the decimal point go? (a) 156.4 (b) 0.1564 (c) 15.64 (d) 1.564
28. 28.0.29 × 12 — where does the decimal point go? (a) 0.348 (b) 3.48 (c) 0.0348 (d) 34.8
29. 29.0.71 × 33 — where does the decimal point go? (a) 23.43 (b) 2.343 (c) 234.3 (d) 0.2343
30. 30.1.8 × 4.6 — where does the decimal point go? (a) 0.828 (b) 8.28 (c) 0.0828 (d) 82.8
31. 31.0.65 × 2.7 — where does the decimal point go? (a) 1.755 (b) 0.01755 (c) 0.1755 (d) 17.55
32. 32.2.1 × 31 — where does the decimal point go? (a) 0.651 (b) 6.51 (c) 65.1 (d) 651
33. 33.0.79 × 0.9 — where does the decimal point go? (a) 0.00711 (b) 7.11 (c) 0.711 (d) 0.0711
34. 34.1.7 × 6 — where does the decimal point go? (a) 0.102 (b) 1.02 (c) 102 (d) 10.2
35. 35.3.5 × 9 — where does the decimal point go? (a) 0.315 (b) 31.5 (c) 315 (d) 3.15
36. 36.0.53 × 0.2 — where does the decimal point go? (a) 0.00106 (b) 0.0106 (c) 0.106 (d) 1.06
37. 37.0.29 × 42 — where does the decimal point go? (a) 1.218 (b) 12.18 (c) 0.1218 (d) 121.8
38. 38.3.3 × 8 — where does the decimal point go? (a) 26.4 (b) 264 (c) 0.264 (d) 2.64
39. 39.4.1 × 4.4 — where does the decimal point go? (a) 180.4 (b) 1.804 (c) 0.1804 (d) 18.04
40. 40.0.54 × 1.8 — where does the decimal point go? (a) 0.0972 (b) 9.72 (c) 0.972 (d) 0.00972

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