Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 900 · 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. 1.7.6 × 0.3 — where does the decimal point go? (a) 22.8 (b) 2.28 (c) 0.0228 (d) 0.228
2. 2.8.7 × 3 — where does the decimal point go? (a) 2.61 (b) 0.261 (c) 26.1 (d) 261
3. 3.6.7 × 2.5 — where does the decimal point go? (a) 16.75 (b) 167.5 (c) 0.1675 (d) 1.675
4. 4.0.56 × 0.6 — where does the decimal point go? (a) 0.336 (b) 0.0336 (c) 0.00336 (d) 3.36
5. 5.1.2 × 0.6 — where does the decimal point go? (a) 0.072 (b) 7.2 (c) 0.72 (d) 0.0072
6. 6.7.2 × 28 — where does the decimal point go? (a) 20.16 (b) 201.6 (c) 2016 (d) 2.016
7. 7.0.22 × 8 — where does the decimal point go? (a) 0.0176 (b) 17.6 (c) 1.76 (d) 0.176
8. 8.0.59 × 3 — where does the decimal point go? (a) 1.77 (b) 0.0177 (c) 17.7 (d) 0.177
9. 9.0.14 × 0.8 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 0.00112 (d) 1.12
10. 10.4.7 × 8 — where does the decimal point go? (a) 3.76 (b) 0.376 (c) 376 (d) 37.6
11. 11.0.83 × 8 — where does the decimal point go? (a) 66.4 (b) 0.664 (c) 6.64 (d) 0.0664
12. 12.7.9 × 0.7 — where does the decimal point go? (a) 5.53 (b) 0.553 (c) 55.3 (d) 0.0553
13. 13.5.4 × 19 — where does the decimal point go? (a) 1026 (b) 10.26 (c) 1.026 (d) 102.6
14. 14.0.97 × 14 — where does the decimal point go? (a) 0.1358 (b) 13.58 (c) 1.358 (d) 135.8
15. 15.0.22 × 2 — where does the decimal point go? (a) 0.044 (b) 0.0044 (c) 4.4 (d) 0.44
16. 16.0.94 × 8 — where does the decimal point go? (a) 0.0752 (b) 7.52 (c) 75.2 (d) 0.752
17. 17.0.67 × 33 — where does the decimal point go? (a) 0.2211 (b) 2.211 (c) 221.1 (d) 22.11
18. 18.0.66 × 1.7 — where does the decimal point go? (a) 0.01122 (b) 1.122 (c) 11.22 (d) 0.1122
19. 19.1.6 × 0.9 — where does the decimal point go? (a) 0.0144 (b) 0.144 (c) 1.44 (d) 14.4
20. 20.0.95 × 4.9 — where does the decimal point go? (a) 0.4655 (b) 46.55 (c) 4.655 (d) 0.04655
21. 21.0.59 × 0.9 — where does the decimal point go? (a) 0.00531 (b) 0.0531 (c) 0.531 (d) 5.31
22. 22.0.69 × 17 — where does the decimal point go? (a) 117.3 (b) 11.73 (c) 0.1173 (d) 1.173
23. 23.5.8 × 21 — where does the decimal point go? (a) 1218 (b) 121.8 (c) 12.18 (d) 1.218
24. 24.0.91 × 4.2 — where does the decimal point go? (a) 3.822 (b) 38.22 (c) 0.03822 (d) 0.3822
25. 25.1.6 × 14 — where does the decimal point go? (a) 0.224 (b) 2.24 (c) 224 (d) 22.4
26. 26.0.32 × 7 — where does the decimal point go? (a) 2.24 (b) 22.4 (c) 0.224 (d) 0.0224
27. 27.2.8 × 26 — where does the decimal point go? (a) 0.728 (b) 7.28 (c) 72.8 (d) 728
28. 28.0.25 × 7 — where does the decimal point go? (a) 0.175 (b) 0.0175 (c) 1.75 (d) 17.5
29. 29.0.63 × 2 — where does the decimal point go? (a) 0.126 (b) 0.0126 (c) 12.6 (d) 1.26
30. 30.0.34 × 3 — where does the decimal point go? (a) 0.102 (b) 0.0102 (c) 1.02 (d) 10.2
31. 31.0.67 × 0.8 — where does the decimal point go? (a) 0.0536 (b) 0.536 (c) 0.00536 (d) 5.36
32. 32.8.4 × 41 — where does the decimal point go? (a) 344.4 (b) 3.444 (c) 3444 (d) 34.44
33. 33.5.1 × 13 — where does the decimal point go? (a) 6.63 (b) 66.3 (c) 0.663 (d) 663
34. 34.2.1 × 2.9 — where does the decimal point go? (a) 0.609 (b) 0.0609 (c) 60.9 (d) 6.09
35. 35.3.9 × 1.8 — where does the decimal point go? (a) 0.702 (b) 7.02 (c) 0.0702 (d) 70.2
36. 36.3.3 × 1.9 — where does the decimal point go? (a) 62.7 (b) 0.627 (c) 6.27 (d) 0.0627
37. 37.2.8 × 7 — where does the decimal point go? (a) 0.196 (b) 19.6 (c) 196 (d) 1.96
38. 38.0.27 × 3 — where does the decimal point go? (a) 0.081 (b) 0.81 (c) 0.0081 (d) 8.1
39. 39.0.73 × 0.2 — where does the decimal point go? (a) 0.146 (b) 0.0146 (c) 1.46 (d) 0.00146
40. 40.6.2 × 3.7 — where does the decimal point go? (a) 0.2294 (b) 229.4 (c) 22.94 (d) 2.294

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