Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 114 · 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. 1.4.9 × 31 — where does the decimal point go? (a) 151.9 (b) 1519 (c) 1.519 (d) 15.19
2. 2.6.7 × 27 — where does the decimal point go? (a) 1809 (b) 180.9 (c) 18.09 (d) 1.809
3. 3.5.4 × 7 — where does the decimal point go? (a) 3.78 (b) 0.378 (c) 37.8 (d) 378
4. 4.0.35 × 3.7 — where does the decimal point go? (a) 1.295 (b) 12.95 (c) 0.1295 (d) 0.01295
5. 5.8.4 × 3.6 — where does the decimal point go? (a) 30.24 (b) 3.024 (c) 302.4 (d) 0.3024
6. 6.0.59 × 0.4 — where does the decimal point go? (a) 0.00236 (b) 0.236 (c) 0.0236 (d) 2.36
7. 7.9.5 × 23 — where does the decimal point go? (a) 2.185 (b) 2185 (c) 21.85 (d) 218.5
8. 8.4.2 × 6 — where does the decimal point go? (a) 0.252 (b) 25.2 (c) 252 (d) 2.52
9. 9.0.81 × 0.5 — where does the decimal point go? (a) 4.05 (b) 0.0405 (c) 0.405 (d) 0.00405
10. 10.0.22 × 2 — where does the decimal point go? (a) 0.44 (b) 0.0044 (c) 0.044 (d) 4.4
11. 11.0.68 × 18 — where does the decimal point go? (a) 1.224 (b) 12.24 (c) 122.4 (d) 0.1224
12. 12.0.95 × 7 — where does the decimal point go? (a) 0.665 (b) 6.65 (c) 0.0665 (d) 66.5
13. 13.6.1 × 0.3 — where does the decimal point go? (a) 0.0183 (b) 18.3 (c) 1.83 (d) 0.183
14. 14.6.9 × 44 — where does the decimal point go? (a) 30.36 (b) 303.6 (c) 3036 (d) 3.036
15. 15.0.17 × 8 — where does the decimal point go? (a) 0.136 (b) 0.0136 (c) 13.6 (d) 1.36
16. 16.3.6 × 0.2 — where does the decimal point go? (a) 0.72 (b) 0.072 (c) 7.2 (d) 0.0072
17. 17.0.89 × 9 — where does the decimal point go? (a) 8.01 (b) 0.0801 (c) 80.1 (d) 0.801
18. 18.2.2 × 6 — where does the decimal point go? (a) 0.132 (b) 13.2 (c) 132 (d) 1.32
19. 19.0.61 × 0.3 — where does the decimal point go? (a) 0.183 (b) 1.83 (c) 0.00183 (d) 0.0183
20. 20.7.7 × 23 — where does the decimal point go? (a) 17.71 (b) 1.771 (c) 1771 (d) 177.1
21. 21.0.42 × 36 — where does the decimal point go? (a) 151.2 (b) 1.512 (c) 0.1512 (d) 15.12
22. 22.4.9 × 2.6 — where does the decimal point go? (a) 0.1274 (b) 1.274 (c) 12.74 (d) 127.4
23. 23.7.5 × 39 — where does the decimal point go? (a) 29.25 (b) 2925 (c) 292.5 (d) 2.925
24. 24.2.4 × 0.4 — where does the decimal point go? (a) 0.0096 (b) 0.096 (c) 0.96 (d) 9.6
25. 25.0.96 × 9 — where does the decimal point go? (a) 86.4 (b) 8.64 (c) 0.0864 (d) 0.864
26. 26.5.5 × 0.9 — where does the decimal point go? (a) 0.495 (b) 4.95 (c) 49.5 (d) 0.0495
27. 27.6.1 × 9 — where does the decimal point go? (a) 54.9 (b) 5.49 (c) 549 (d) 0.549
28. 28.7.8 × 0.9 — where does the decimal point go? (a) 0.702 (b) 0.0702 (c) 7.02 (d) 70.2
29. 29.7.2 × 9 — where does the decimal point go? (a) 0.648 (b) 6.48 (c) 648 (d) 64.8
30. 30.0.15 × 2.9 — where does the decimal point go? (a) 0.00435 (b) 0.435 (c) 0.0435 (d) 4.35
31. 31.0.77 × 28 — where does the decimal point go? (a) 21.56 (b) 2.156 (c) 215.6 (d) 0.2156
32. 32.0.86 × 3 — where does the decimal point go? (a) 25.8 (b) 0.0258 (c) 2.58 (d) 0.258
33. 33.2.7 × 0.9 — where does the decimal point go? (a) 0.243 (b) 2.43 (c) 0.0243 (d) 24.3
34. 34.0.15 × 45 — where does the decimal point go? (a) 67.5 (b) 6.75 (c) 0.0675 (d) 0.675
35. 35.0.61 × 3.3 — where does the decimal point go? (a) 0.2013 (b) 2.013 (c) 20.13 (d) 0.02013
36. 36.0.19 × 25 — where does the decimal point go? (a) 0.475 (b) 0.0475 (c) 4.75 (d) 47.5
37. 37.2.6 × 1.8 — where does the decimal point go? (a) 4.68 (b) 0.0468 (c) 0.468 (d) 46.8
38. 38.8.4 × 3.3 — where does the decimal point go? (a) 0.2772 (b) 27.72 (c) 2.772 (d) 277.2
39. 39.0.33 × 0.3 — where does the decimal point go? (a) 0.099 (b) 0.0099 (c) 0.00099 (d) 0.99
40. 40.9.2 × 0.7 — where does the decimal point go? (a) 6.44 (b) 0.0644 (c) 64.4 (d) 0.644

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