Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 291 · 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. 1.0.54 × 31 — where does the decimal point go? (a) 16.74 (b) 0.1674 (c) 167.4 (d) 1.674
2. 2.2.1 × 0.7 — where does the decimal point go? (a) 14.7 (b) 1.47 (c) 0.0147 (d) 0.147
3. 3.0.89 × 9 — where does the decimal point go? (a) 80.1 (b) 8.01 (c) 0.0801 (d) 0.801
4. 4.8.8 × 2 — where does the decimal point go? (a) 1.76 (b) 176 (c) 17.6 (d) 0.176
5. 5.4.1 × 26 — where does the decimal point go? (a) 10.66 (b) 106.6 (c) 1.066 (d) 1066
6. 6.0.46 × 3.1 — where does the decimal point go? (a) 14.26 (b) 0.1426 (c) 1.426 (d) 0.01426
7. 7.1.2 × 3 — where does the decimal point go? (a) 3.6 (b) 0.036 (c) 0.36 (d) 36
8. 8.4.1 × 11 — where does the decimal point go? (a) 4.51 (b) 451 (c) 0.451 (d) 45.1
9. 9.1.2 × 0.2 — where does the decimal point go? (a) 2.4 (b) 0.0024 (c) 0.24 (d) 0.024
10. 10.7.2 × 14 — where does the decimal point go? (a) 1.008 (b) 10.08 (c) 1008 (d) 100.8
11. 11.0.54 × 0.2 — where does the decimal point go? (a) 0.00108 (b) 1.08 (c) 0.0108 (d) 0.108
12. 12.9.4 × 7 — where does the decimal point go? (a) 6.58 (b) 658 (c) 0.658 (d) 65.8
13. 13.7.7 × 48 — where does the decimal point go? (a) 369.6 (b) 3.696 (c) 36.96 (d) 3696
14. 14.0.17 × 0.3 — where does the decimal point go? (a) 0.00051 (b) 0.0051 (c) 0.51 (d) 0.051
15. 15.8.3 × 3 — where does the decimal point go? (a) 0.249 (b) 2.49 (c) 249 (d) 24.9
16. 16.0.22 × 38 — where does the decimal point go? (a) 83.6 (b) 8.36 (c) 0.0836 (d) 0.836
17. 17.2.7 × 0.2 — where does the decimal point go? (a) 0.054 (b) 0.0054 (c) 0.54 (d) 5.4
18. 18.3.8 × 2.2 — where does the decimal point go? (a) 0.836 (b) 83.6 (c) 8.36 (d) 0.0836
19. 19.2.6 × 7 — where does the decimal point go? (a) 18.2 (b) 182 (c) 0.182 (d) 1.82
20. 20.0.73 × 6 — where does the decimal point go? (a) 43.8 (b) 0.438 (c) 4.38 (d) 0.0438
21. 21.4.3 × 36 — where does the decimal point go? (a) 154.8 (b) 1.548 (c) 15.48 (d) 1548
22. 22.6.1 × 0.2 — where does the decimal point go? (a) 1.22 (b) 0.122 (c) 12.2 (d) 0.0122
23. 23.9.2 × 4.9 — where does the decimal point go? (a) 45.08 (b) 450.8 (c) 4.508 (d) 0.4508
24. 24.6.7 × 12 — where does the decimal point go? (a) 80.4 (b) 0.804 (c) 8.04 (d) 804
25. 25.0.47 × 29 — where does the decimal point go? (a) 136.3 (b) 13.63 (c) 0.1363 (d) 1.363
26. 26.0.42 × 0.4 — where does the decimal point go? (a) 0.0168 (b) 1.68 (c) 0.00168 (d) 0.168
27. 27.0.73 × 2.8 — where does the decimal point go? (a) 0.2044 (b) 2.044 (c) 20.44 (d) 0.02044
28. 28.0.96 × 42 — where does the decimal point go? (a) 0.4032 (b) 40.32 (c) 403.2 (d) 4.032
29. 29.0.43 × 13 — where does the decimal point go? (a) 55.9 (b) 5.59 (c) 0.0559 (d) 0.559
30. 30.4.8 × 2 — where does the decimal point go? (a) 0.96 (b) 9.6 (c) 0.096 (d) 96
31. 31.0.26 × 13 — where does the decimal point go? (a) 0.338 (b) 33.8 (c) 3.38 (d) 0.0338
32. 32.5.9 × 0.7 — where does the decimal point go? (a) 4.13 (b) 41.3 (c) 0.413 (d) 0.0413
33. 33.3.6 × 0.9 — where does the decimal point go? (a) 3.24 (b) 0.324 (c) 0.0324 (d) 32.4
34. 34.0.41 × 0.4 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 0.00164 (d) 0.0164
35. 35.5.7 × 47 — where does the decimal point go? (a) 2.679 (b) 267.9 (c) 2679 (d) 26.79
36. 36.0.19 × 7 — where does the decimal point go? (a) 1.33 (b) 0.0133 (c) 13.3 (d) 0.133
37. 37.0.39 × 0.7 — where does the decimal point go? (a) 0.273 (b) 2.73 (c) 0.00273 (d) 0.0273
38. 38.9.9 × 2 — where does the decimal point go? (a) 19.8 (b) 0.198 (c) 198 (d) 1.98
39. 39.9.6 × 2 — where does the decimal point go? (a) 192 (b) 1.92 (c) 19.2 (d) 0.192
40. 40.9.1 × 7 — where does the decimal point go? (a) 637 (b) 63.7 (c) 6.37 (d) 0.637

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