Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 903 · 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. 1.0.34 × 3.8 — where does the decimal point go? (a) 0.01292 (b) 1.292 (c) 12.92 (d) 0.1292
2. 2.0.72 × 7 — where does the decimal point go? (a) 5.04 (b) 0.504 (c) 0.0504 (d) 50.4
3. 3.5.1 × 3 — where does the decimal point go? (a) 0.153 (b) 15.3 (c) 1.53 (d) 153
4. 4.0.52 × 0.3 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 0.00156 (d) 0.0156
5. 5.1.7 × 2 — where does the decimal point go? (a) 0.034 (b) 0.34 (c) 3.4 (d) 34
6. 6.0.46 × 9 — where does the decimal point go? (a) 4.14 (b) 0.414 (c) 0.0414 (d) 41.4
7. 7.9.2 × 0.2 — where does the decimal point go? (a) 1.84 (b) 0.0184 (c) 0.184 (d) 18.4
8. 8.7.2 × 1.2 — where does the decimal point go? (a) 0.864 (b) 8.64 (c) 86.4 (d) 0.0864
9. 9.3.7 × 3 — where does the decimal point go? (a) 111 (b) 0.111 (c) 11.1 (d) 1.11
10. 10.0.63 × 21 — where does the decimal point go? (a) 13.23 (b) 132.3 (c) 1.323 (d) 0.1323
11. 11.0.37 × 4 — where does the decimal point go? (a) 0.148 (b) 1.48 (c) 14.8 (d) 0.0148
12. 12.0.83 × 3 — where does the decimal point go? (a) 0.0249 (b) 0.249 (c) 2.49 (d) 24.9
13. 13.3.4 × 4.7 — where does the decimal point go? (a) 0.1598 (b) 159.8 (c) 1.598 (d) 15.98
14. 14.0.85 × 5 — where does the decimal point go? (a) 0.425 (b) 0.0425 (c) 42.5 (d) 4.25
15. 15.4.8 × 0.4 — where does the decimal point go? (a) 0.192 (b) 1.92 (c) 19.2 (d) 0.0192
16. 16.7.9 × 3.1 — where does the decimal point go? (a) 244.9 (b) 2.449 (c) 0.2449 (d) 24.49
17. 17.5.2 × 4 — where does the decimal point go? (a) 2.08 (b) 20.8 (c) 0.208 (d) 208
18. 18.8.8 × 7 — where does the decimal point go? (a) 61.6 (b) 0.616 (c) 6.16 (d) 616
19. 19.0.35 × 3 — where does the decimal point go? (a) 0.105 (b) 10.5 (c) 0.0105 (d) 1.05
20. 20.0.23 × 33 — where does the decimal point go? (a) 0.0759 (b) 75.9 (c) 0.759 (d) 7.59
21. 21.3.5 × 39 — where does the decimal point go? (a) 1365 (b) 13.65 (c) 1.365 (d) 136.5
22. 22.0.13 × 0.5 — where does the decimal point go? (a) 0.065 (b) 0.0065 (c) 0.00065 (d) 0.65
23. 23.7.5 × 4.7 — where does the decimal point go? (a) 3.525 (b) 0.3525 (c) 352.5 (d) 35.25
24. 24.0.33 × 3.4 — where does the decimal point go? (a) 0.1122 (b) 1.122 (c) 11.22 (d) 0.01122
25. 25.5.7 × 4 — where does the decimal point go? (a) 0.228 (b) 228 (c) 2.28 (d) 22.8
26. 26.2.9 × 11 — where does the decimal point go? (a) 319 (b) 31.9 (c) 3.19 (d) 0.319
27. 27.9.5 × 2.7 — where does the decimal point go? (a) 2.565 (b) 256.5 (c) 0.2565 (d) 25.65
28. 28.0.68 × 12 — where does the decimal point go? (a) 81.6 (b) 0.816 (c) 8.16 (d) 0.0816
29. 29.7.1 × 9 — where does the decimal point go? (a) 63.9 (b) 639 (c) 6.39 (d) 0.639
30. 30.9.9 × 0.4 — where does the decimal point go? (a) 0.396 (b) 3.96 (c) 0.0396 (d) 39.6
31. 31.4.7 × 34 — where does the decimal point go? (a) 1.598 (b) 15.98 (c) 1598 (d) 159.8
32. 32.0.39 × 4 — where does the decimal point go? (a) 0.0156 (b) 15.6 (c) 1.56 (d) 0.156
33. 33.0.23 × 17 — where does the decimal point go? (a) 0.0391 (b) 0.391 (c) 3.91 (d) 39.1
34. 34.6.2 × 3 — where does the decimal point go? (a) 1.86 (b) 0.186 (c) 186 (d) 18.6
35. 35.8.7 × 0.5 — where does the decimal point go? (a) 0.0435 (b) 4.35 (c) 0.435 (d) 43.5
36. 36.7.8 × 0.2 — where does the decimal point go? (a) 1.56 (b) 0.156 (c) 0.0156 (d) 15.6
37. 37.0.79 × 48 — where does the decimal point go? (a) 3.792 (b) 379.2 (c) 0.3792 (d) 37.92
38. 38.0.23 × 0.4 — where does the decimal point go? (a) 0.092 (b) 0.00092 (c) 0.92 (d) 0.0092
39. 39.1.5 × 49 — where does the decimal point go? (a) 735 (b) 0.735 (c) 7.35 (d) 73.5
40. 40.0.16 × 48 — where does the decimal point go? (a) 0.0768 (b) 0.768 (c) 76.8 (d) 7.68

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