Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 289 · 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. 1.5.4 × 1.2 — where does the decimal point go? (a) 64.8 (b) 0.648 (c) 6.48 (d) 0.0648
2. 2.9.3 × 0.7 — where does the decimal point go? (a) 0.651 (b) 0.0651 (c) 6.51 (d) 65.1
3. 3.2.8 × 8 — where does the decimal point go? (a) 0.224 (b) 2.24 (c) 224 (d) 22.4
4. 4.0.66 × 19 — where does the decimal point go? (a) 12.54 (b) 1.254 (c) 125.4 (d) 0.1254
5. 5.8.3 × 48 — where does the decimal point go? (a) 398.4 (b) 3984 (c) 3.984 (d) 39.84
6. 6.0.15 × 0.7 — where does the decimal point go? (a) 0.00105 (b) 1.05 (c) 0.0105 (d) 0.105
7. 7.0.44 × 8 — where does the decimal point go? (a) 3.52 (b) 0.0352 (c) 35.2 (d) 0.352
8. 8.5.3 × 15 — where does the decimal point go? (a) 79.5 (b) 795 (c) 7.95 (d) 0.795
9. 9.7.8 × 12 — where does the decimal point go? (a) 93.6 (b) 0.936 (c) 936 (d) 9.36
10. 10.0.84 × 43 — where does the decimal point go? (a) 0.3612 (b) 3.612 (c) 361.2 (d) 36.12
11. 11.0.64 × 0.6 — where does the decimal point go? (a) 0.00384 (b) 0.384 (c) 0.0384 (d) 3.84
12. 12.6.1 × 36 — where does the decimal point go? (a) 21.96 (b) 2.196 (c) 219.6 (d) 2196
13. 13.7.5 × 2.7 — where does the decimal point go? (a) 2.025 (b) 202.5 (c) 20.25 (d) 0.2025
14. 14.1.4 × 0.2 — where does the decimal point go? (a) 0.28 (b) 0.028 (c) 0.0028 (d) 2.8
15. 15.1.2 × 6 — where does the decimal point go? (a) 0.72 (b) 7.2 (c) 72 (d) 0.072
16. 16.0.96 × 0.6 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 0.0576 (d) 0.00576
17. 17.1.2 × 2.7 — where does the decimal point go? (a) 3.24 (b) 32.4 (c) 0.324 (d) 0.0324
18. 18.0.99 × 2 — where does the decimal point go? (a) 1.98 (b) 0.198 (c) 0.0198 (d) 19.8
19. 19.8.7 × 22 — where does the decimal point go? (a) 191.4 (b) 1.914 (c) 1914 (d) 19.14
20. 20.0.52 × 0.4 — where does the decimal point go? (a) 0.00208 (b) 0.208 (c) 2.08 (d) 0.0208
21. 21.5.8 × 0.8 — where does the decimal point go? (a) 46.4 (b) 4.64 (c) 0.0464 (d) 0.464
22. 22.1.3 × 8 — where does the decimal point go? (a) 10.4 (b) 1.04 (c) 104 (d) 0.104
23. 23.0.56 × 2 — where does the decimal point go? (a) 11.2 (b) 0.112 (c) 0.0112 (d) 1.12
24. 24.0.34 × 0.8 — where does the decimal point go? (a) 0.272 (b) 0.0272 (c) 2.72 (d) 0.00272
25. 25.6.1 × 25 — where does the decimal point go? (a) 1.525 (b) 1525 (c) 15.25 (d) 152.5
26. 26.6.4 × 0.4 — where does the decimal point go? (a) 25.6 (b) 0.256 (c) 0.0256 (d) 2.56
27. 27.5.1 × 6 — where does the decimal point go? (a) 0.306 (b) 3.06 (c) 306 (d) 30.6
28. 28.1.4 × 9 — where does the decimal point go? (a) 12.6 (b) 0.126 (c) 126 (d) 1.26
29. 29.0.42 × 22 — where does the decimal point go? (a) 9.24 (b) 92.4 (c) 0.0924 (d) 0.924
30. 30.0.83 × 2.6 — where does the decimal point go? (a) 0.02158 (b) 0.2158 (c) 21.58 (d) 2.158
31. 31.0.16 × 28 — where does the decimal point go? (a) 0.0448 (b) 4.48 (c) 0.448 (d) 44.8
32. 32.3.8 × 0.3 — where does the decimal point go? (a) 1.14 (b) 0.0114 (c) 11.4 (d) 0.114
33. 33.0.31 × 2.4 — where does the decimal point go? (a) 7.44 (b) 0.00744 (c) 0.744 (d) 0.0744
34. 34.0.81 × 4.8 — where does the decimal point go? (a) 0.03888 (b) 0.3888 (c) 38.88 (d) 3.888
35. 35.0.93 × 22 — where does the decimal point go? (a) 20.46 (b) 0.2046 (c) 2.046 (d) 204.6
36. 36.0.74 × 4.4 — where does the decimal point go? (a) 3.256 (b) 0.3256 (c) 0.03256 (d) 32.56
37. 37.7.1 × 23 — where does the decimal point go? (a) 163.3 (b) 1633 (c) 1.633 (d) 16.33
38. 38.0.97 × 2.3 — where does the decimal point go? (a) 2.231 (b) 22.31 (c) 0.2231 (d) 0.02231
39. 39.0.66 × 0.7 — where does the decimal point go? (a) 4.62 (b) 0.0462 (c) 0.00462 (d) 0.462
40. 40.0.16 × 32 — where does the decimal point go? (a) 0.512 (b) 51.2 (c) 0.0512 (d) 5.12

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