Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 557 · 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. 1.4.4 × 3 — where does the decimal point go? (a) 1.32 (b) 13.2 (c) 0.132 (d) 132
2. 2.0.22 × 3 — where does the decimal point go? (a) 0.066 (b) 0.0066 (c) 0.66 (d) 6.6
3. 3.6.1 × 45 — where does the decimal point go? (a) 27.45 (b) 2.745 (c) 274.5 (d) 2745
4. 4.0.27 × 0.4 — where does the decimal point go? (a) 0.00108 (b) 0.0108 (c) 1.08 (d) 0.108
5. 5.7.6 × 24 — where does the decimal point go? (a) 1.824 (b) 1824 (c) 182.4 (d) 18.24
6. 6.2.6 × 2 — where does the decimal point go? (a) 5.2 (b) 0.52 (c) 0.052 (d) 52
7. 7.0.16 × 4.2 — where does the decimal point go? (a) 0.0672 (b) 6.72 (c) 0.672 (d) 0.00672
8. 8.0.25 × 1.7 — where does the decimal point go? (a) 4.25 (b) 0.00425 (c) 0.425 (d) 0.0425
9. 9.4.2 × 0.2 — where does the decimal point go? (a) 0.0084 (b) 0.84 (c) 8.4 (d) 0.084
10. 10.9.9 × 18 — where does the decimal point go? (a) 17.82 (b) 1782 (c) 1.782 (d) 178.2
11. 11.0.93 × 8 — where does the decimal point go? (a) 0.744 (b) 7.44 (c) 0.0744 (d) 74.4
12. 12.0.47 × 1.4 — where does the decimal point go? (a) 0.0658 (b) 6.58 (c) 0.00658 (d) 0.658
13. 13.6.9 × 0.9 — where does the decimal point go? (a) 62.1 (b) 6.21 (c) 0.0621 (d) 0.621
14. 14.3.9 × 9 — where does the decimal point go? (a) 3.51 (b) 0.351 (c) 35.1 (d) 351
15. 15.0.26 × 0.2 — where does the decimal point go? (a) 0.0052 (b) 0.052 (c) 0.00052 (d) 0.52
16. 16.3.5 × 47 — where does the decimal point go? (a) 164.5 (b) 1645 (c) 1.645 (d) 16.45
17. 17.9.1 × 0.9 — where does the decimal point go? (a) 81.9 (b) 0.0819 (c) 0.819 (d) 8.19
18. 18.7.7 × 9 — where does the decimal point go? (a) 0.693 (b) 6.93 (c) 693 (d) 69.3
19. 19.0.16 × 0.9 — where does the decimal point go? (a) 0.144 (b) 0.00144 (c) 1.44 (d) 0.0144
20. 20.2.2 × 0.2 — where does the decimal point go? (a) 0.0044 (b) 0.44 (c) 0.044 (d) 4.4
21. 21.0.42 × 0.4 — where does the decimal point go? (a) 0.0168 (b) 0.00168 (c) 0.168 (d) 1.68
22. 22.0.56 × 9 — where does the decimal point go? (a) 50.4 (b) 5.04 (c) 0.504 (d) 0.0504
23. 23.3.9 × 0.9 — where does the decimal point go? (a) 3.51 (b) 0.0351 (c) 35.1 (d) 0.351
24. 24.0.32 × 0.4 — where does the decimal point go? (a) 0.128 (b) 0.0128 (c) 0.00128 (d) 1.28
25. 25.9.4 × 0.3 — where does the decimal point go? (a) 28.2 (b) 0.282 (c) 0.0282 (d) 2.82
26. 26.0.69 × 4 — where does the decimal point go? (a) 2.76 (b) 27.6 (c) 0.0276 (d) 0.276
27. 27.0.68 × 6 — where does the decimal point go? (a) 4.08 (b) 40.8 (c) 0.0408 (d) 0.408
28. 28.6.2 × 8 — where does the decimal point go? (a) 49.6 (b) 4.96 (c) 0.496 (d) 496
29. 29.0.36 × 14 — where does the decimal point go? (a) 50.4 (b) 0.0504 (c) 0.504 (d) 5.04
30. 30.7.8 × 8 — where does the decimal point go? (a) 624 (b) 6.24 (c) 62.4 (d) 0.624
31. 31.1.8 × 1.6 — where does the decimal point go? (a) 2.88 (b) 28.8 (c) 0.288 (d) 0.0288
32. 32.2.3 × 0.5 — where does the decimal point go? (a) 1.15 (b) 11.5 (c) 0.0115 (d) 0.115
33. 33.1.5 × 7 — where does the decimal point go? (a) 10.5 (b) 0.105 (c) 105 (d) 1.05
34. 34.0.32 × 3 — where does the decimal point go? (a) 9.6 (b) 0.096 (c) 0.96 (d) 0.0096
35. 35.0.41 × 9 — where does the decimal point go? (a) 36.9 (b) 0.369 (c) 3.69 (d) 0.0369
36. 36.2.6 × 0.9 — where does the decimal point go? (a) 2.34 (b) 0.0234 (c) 23.4 (d) 0.234
37. 37.0.17 × 0.3 — where does the decimal point go? (a) 0.51 (b) 0.00051 (c) 0.0051 (d) 0.051
38. 38.0.96 × 8 — where does the decimal point go? (a) 0.768 (b) 76.8 (c) 7.68 (d) 0.0768
39. 39.8.1 × 0.9 — where does the decimal point go? (a) 0.729 (b) 7.29 (c) 72.9 (d) 0.0729
40. 40.5.7 × 3.9 — where does the decimal point go? (a) 22.23 (b) 0.2223 (c) 222.3 (d) 2.223

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