Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 38 · 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. 1.0.26 × 2.9 — where does the decimal point go? (a) 0.0754 (b) 0.754 (c) 0.00754 (d) 7.54
2. 2.7.3 × 2.9 — where does the decimal point go? (a) 21.17 (b) 2.117 (c) 0.2117 (d) 211.7
3. 3.3.7 × 12 — where does the decimal point go? (a) 444 (b) 4.44 (c) 44.4 (d) 0.444
4. 4.9.1 × 4 — where does the decimal point go? (a) 3.64 (b) 0.364 (c) 364 (d) 36.4
5. 5.0.94 × 0.9 — where does the decimal point go? (a) 8.46 (b) 0.846 (c) 0.0846 (d) 0.00846
6. 6.6.3 × 46 — where does the decimal point go? (a) 289.8 (b) 2898 (c) 2.898 (d) 28.98
7. 7.0.47 × 0.9 — where does the decimal point go? (a) 0.423 (b) 0.00423 (c) 4.23 (d) 0.0423
8. 8.6.3 × 43 — where does the decimal point go? (a) 27.09 (b) 2.709 (c) 270.9 (d) 2709
9. 9.0.98 × 41 — where does the decimal point go? (a) 40.18 (b) 4.018 (c) 401.8 (d) 0.4018
10. 10.2.9 × 3.2 — where does the decimal point go? (a) 0.928 (b) 92.8 (c) 9.28 (d) 0.0928
11. 11.2.4 × 9 — where does the decimal point go? (a) 216 (b) 2.16 (c) 0.216 (d) 21.6
12. 12.0.32 × 1.8 — where does the decimal point go? (a) 0.576 (b) 0.0576 (c) 5.76 (d) 0.00576
13. 13.4.6 × 0.7 — where does the decimal point go? (a) 0.0322 (b) 0.322 (c) 3.22 (d) 32.2
14. 14.1.6 × 9 — where does the decimal point go? (a) 144 (b) 14.4 (c) 0.144 (d) 1.44
15. 15.3.6 × 0.4 — where does the decimal point go? (a) 1.44 (b) 14.4 (c) 0.144 (d) 0.0144
16. 16.6.3 × 1.8 — where does the decimal point go? (a) 113.4 (b) 11.34 (c) 0.1134 (d) 1.134
17. 17.0.86 × 7 — where does the decimal point go? (a) 0.602 (b) 60.2 (c) 0.0602 (d) 6.02
18. 18.8.7 × 1.4 — where does the decimal point go? (a) 0.1218 (b) 121.8 (c) 1.218 (d) 12.18
19. 19.0.86 × 21 — where does the decimal point go? (a) 18.06 (b) 180.6 (c) 1.806 (d) 0.1806
20. 20.0.84 × 1.4 — where does the decimal point go? (a) 0.1176 (b) 1.176 (c) 11.76 (d) 0.01176
21. 21.2.2 × 2.6 — where does the decimal point go? (a) 0.0572 (b) 5.72 (c) 57.2 (d) 0.572
22. 22.2.4 × 24 — where does the decimal point go? (a) 0.576 (b) 5.76 (c) 576 (d) 57.6
23. 23.0.68 × 1.6 — where does the decimal point go? (a) 10.88 (b) 0.01088 (c) 0.1088 (d) 1.088
24. 24.0.86 × 11 — where does the decimal point go? (a) 0.946 (b) 94.6 (c) 9.46 (d) 0.0946
25. 25.7.6 × 4.1 — where does the decimal point go? (a) 31.16 (b) 0.3116 (c) 311.6 (d) 3.116
26. 26.0.43 × 2.6 — where does the decimal point go? (a) 11.18 (b) 0.1118 (c) 1.118 (d) 0.01118
27. 27.1.8 × 4 — where does the decimal point go? (a) 7.2 (b) 0.072 (c) 72 (d) 0.72
28. 28.0.36 × 3.9 — where does the decimal point go? (a) 0.01404 (b) 14.04 (c) 1.404 (d) 0.1404
29. 29.5.2 × 2.1 — where does the decimal point go? (a) 1.092 (b) 10.92 (c) 0.1092 (d) 109.2
30. 30.0.29 × 2 — where does the decimal point go? (a) 0.58 (b) 0.0058 (c) 0.058 (d) 5.8
31. 31.0.57 × 0.3 — where does the decimal point go? (a) 1.71 (b) 0.0171 (c) 0.171 (d) 0.00171
32. 32.0.23 × 13 — where does the decimal point go? (a) 29.9 (b) 2.99 (c) 0.299 (d) 0.0299
33. 33.0.28 × 7 — where does the decimal point go? (a) 19.6 (b) 1.96 (c) 0.0196 (d) 0.196
34. 34.3.5 × 3 — where does the decimal point go? (a) 10.5 (b) 1.05 (c) 105 (d) 0.105
35. 35.3.9 × 3.5 — where does the decimal point go? (a) 1.365 (b) 0.1365 (c) 13.65 (d) 136.5
36. 36.0.48 × 7 — where does the decimal point go? (a) 3.36 (b) 0.0336 (c) 0.336 (d) 33.6
37. 37.7.7 × 0.3 — where does the decimal point go? (a) 2.31 (b) 0.231 (c) 23.1 (d) 0.0231
38. 38.3.7 × 2 — where does the decimal point go? (a) 0.074 (b) 74 (c) 7.4 (d) 0.74
39. 39.1.3 × 1.1 — where does the decimal point go? (a) 14.3 (b) 0.143 (c) 0.0143 (d) 1.43
40. 40.0.42 × 16 — where does the decimal point go? (a) 0.0672 (b) 67.2 (c) 6.72 (d) 0.672

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