Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 140 · 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. 1.0.76 × 3 — where does the decimal point go? (a) 0.228 (b) 0.0228 (c) 22.8 (d) 2.28
2. 2.0.31 × 0.4 — where does the decimal point go? (a) 0.00124 (b) 0.124 (c) 0.0124 (d) 1.24
3. 3.0.51 × 3 — where does the decimal point go? (a) 0.0153 (b) 1.53 (c) 15.3 (d) 0.153
4. 4.6.1 × 6 — where does the decimal point go? (a) 0.366 (b) 366 (c) 36.6 (d) 3.66
5. 5.0.88 × 0.7 — where does the decimal point go? (a) 0.616 (b) 0.0616 (c) 6.16 (d) 0.00616
6. 6.3.4 × 37 — where does the decimal point go? (a) 125.8 (b) 1258 (c) 12.58 (d) 1.258
7. 7.7.6 × 0.9 — where does the decimal point go? (a) 6.84 (b) 0.684 (c) 0.0684 (d) 68.4
8. 8.7.6 × 0.3 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 0.0228 (d) 22.8
9. 9.3.6 × 41 — where does the decimal point go? (a) 1.476 (b) 14.76 (c) 1476 (d) 147.6
10. 10.0.45 × 33 — where does the decimal point go? (a) 1.485 (b) 14.85 (c) 148.5 (d) 0.1485
11. 11.0.33 × 4.1 — where does the decimal point go? (a) 0.1353 (b) 1.353 (c) 0.01353 (d) 13.53
12. 12.2.9 × 0.7 — where does the decimal point go? (a) 0.0203 (b) 0.203 (c) 20.3 (d) 2.03
13. 13.0.91 × 32 — where does the decimal point go? (a) 2.912 (b) 0.2912 (c) 291.2 (d) 29.12
14. 14.1.9 × 0.5 — where does the decimal point go? (a) 0.095 (b) 0.95 (c) 0.0095 (d) 9.5
15. 15.0.53 × 47 — where does the decimal point go? (a) 0.2491 (b) 2.491 (c) 24.91 (d) 249.1
16. 16.8.7 × 16 — where does the decimal point go? (a) 1.392 (b) 1392 (c) 13.92 (d) 139.2
17. 17.6.9 × 4.9 — where does the decimal point go? (a) 3.381 (b) 338.1 (c) 0.3381 (d) 33.81
18. 18.1.5 × 0.7 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 1.05 (d) 10.5
19. 19.2.8 × 0.9 — where does the decimal point go? (a) 0.0252 (b) 2.52 (c) 25.2 (d) 0.252
20. 20.9.6 × 2.4 — where does the decimal point go? (a) 230.4 (b) 23.04 (c) 0.2304 (d) 2.304
21. 21.0.29 × 0.3 — where does the decimal point go? (a) 0.00087 (b) 0.87 (c) 0.087 (d) 0.0087
22. 22.0.87 × 0.5 — where does the decimal point go? (a) 0.435 (b) 4.35 (c) 0.0435 (d) 0.00435
23. 23.0.17 × 4 — where does the decimal point go? (a) 0.0068 (b) 6.8 (c) 0.068 (d) 0.68
24. 24.0.47 × 0.3 — where does the decimal point go? (a) 0.00141 (b) 1.41 (c) 0.0141 (d) 0.141
25. 25.0.24 × 12 — where does the decimal point go? (a) 28.8 (b) 0.288 (c) 2.88 (d) 0.0288
26. 26.0.18 × 0.2 — where does the decimal point go? (a) 0.0036 (b) 0.036 (c) 0.00036 (d) 0.36
27. 27.4.3 × 5 — where does the decimal point go? (a) 21.5 (b) 0.215 (c) 215 (d) 2.15
28. 28.0.89 × 0.9 — where does the decimal point go? (a) 0.801 (b) 0.0801 (c) 0.00801 (d) 8.01
29. 29.0.35 × 45 — where does the decimal point go? (a) 0.1575 (b) 157.5 (c) 15.75 (d) 1.575
30. 30.5.4 × 0.8 — where does the decimal point go? (a) 4.32 (b) 0.0432 (c) 43.2 (d) 0.432
31. 31.0.29 × 2 — where does the decimal point go? (a) 0.58 (b) 0.058 (c) 0.0058 (d) 5.8
32. 32.3.6 × 47 — where does the decimal point go? (a) 1692 (b) 169.2 (c) 1.692 (d) 16.92
33. 33.0.12 × 0.6 — where does the decimal point go? (a) 0.00072 (b) 0.72 (c) 0.072 (d) 0.0072
34. 34.6.6 × 0.3 — where does the decimal point go? (a) 1.98 (b) 0.198 (c) 0.0198 (d) 19.8
35. 35.0.71 × 6 — where does the decimal point go? (a) 0.426 (b) 4.26 (c) 0.0426 (d) 42.6
36. 36.7.3 × 4.3 — where does the decimal point go? (a) 0.3139 (b) 313.9 (c) 31.39 (d) 3.139
37. 37.2.6 × 41 — where does the decimal point go? (a) 106.6 (b) 10.66 (c) 1.066 (d) 1066
38. 38.0.37 × 0.8 — where does the decimal point go? (a) 0.00296 (b) 0.296 (c) 2.96 (d) 0.0296
39. 39.6.2 × 46 — where does the decimal point go? (a) 2.852 (b) 2852 (c) 28.52 (d) 285.2
40. 40.0.23 × 0.5 — where does the decimal point go? (a) 1.15 (b) 0.00115 (c) 0.0115 (d) 0.115

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