Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 851 · 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. 1.8.7 × 2 — where does the decimal point go? (a) 0.174 (b) 1.74 (c) 17.4 (d) 174
2. 2.0.72 × 7 — where does the decimal point go? (a) 0.0504 (b) 50.4 (c) 5.04 (d) 0.504
3. 3.0.43 × 0.6 — where does the decimal point go? (a) 0.258 (b) 0.0258 (c) 0.00258 (d) 2.58
4. 4.4.3 × 0.2 — where does the decimal point go? (a) 0.86 (b) 0.0086 (c) 8.6 (d) 0.086
5. 5.6.3 × 22 — where does the decimal point go? (a) 1.386 (b) 138.6 (c) 13.86 (d) 1386
6. 6.0.76 × 3.6 — where does the decimal point go? (a) 2.736 (b) 0.2736 (c) 0.02736 (d) 27.36
7. 7.0.78 × 0.8 — where does the decimal point go? (a) 0.624 (b) 6.24 (c) 0.0624 (d) 0.00624
8. 8.0.53 × 4 — where does the decimal point go? (a) 0.212 (b) 0.0212 (c) 2.12 (d) 21.2
9. 9.0.89 × 0.8 — where does the decimal point go? (a) 0.00712 (b) 7.12 (c) 0.712 (d) 0.0712
10. 10.0.17 × 0.4 — where does the decimal point go? (a) 0.68 (b) 0.00068 (c) 0.068 (d) 0.0068
11. 11.0.99 × 0.4 — where does the decimal point go? (a) 0.0396 (b) 3.96 (c) 0.396 (d) 0.00396
12. 12.2.7 × 0.2 — where does the decimal point go? (a) 0.54 (b) 0.054 (c) 5.4 (d) 0.0054
13. 13.0.29 × 2.5 — where does the decimal point go? (a) 0.0725 (b) 7.25 (c) 0.00725 (d) 0.725
14. 14.9.2 × 19 — where does the decimal point go? (a) 174.8 (b) 1.748 (c) 1748 (d) 17.48
15. 15.0.37 × 1.5 — where does the decimal point go? (a) 0.0555 (b) 0.555 (c) 0.00555 (d) 5.55
16. 16.0.98 × 2.1 — where does the decimal point go? (a) 0.02058 (b) 0.2058 (c) 2.058 (d) 20.58
17. 17.0.41 × 3 — where does the decimal point go? (a) 1.23 (b) 12.3 (c) 0.123 (d) 0.0123
18. 18.5.9 × 47 — where does the decimal point go? (a) 2.773 (b) 277.3 (c) 27.73 (d) 2773
19. 19.0.75 × 29 — where does the decimal point go? (a) 0.2175 (b) 21.75 (c) 217.5 (d) 2.175
20. 20.1.7 × 0.8 — where does the decimal point go? (a) 13.6 (b) 0.136 (c) 0.0136 (d) 1.36
21. 21.9.8 × 3.7 — where does the decimal point go? (a) 362.6 (b) 3.626 (c) 0.3626 (d) 36.26
22. 22.0.41 × 0.4 — where does the decimal point go? (a) 0.164 (b) 1.64 (c) 0.0164 (d) 0.00164
23. 23.0.51 × 1.6 — where does the decimal point go? (a) 0.816 (b) 8.16 (c) 0.00816 (d) 0.0816
24. 24.0.21 × 0.7 — where does the decimal point go? (a) 0.0147 (b) 0.00147 (c) 0.147 (d) 1.47
25. 25.5.8 × 24 — where does the decimal point go? (a) 13.92 (b) 1.392 (c) 139.2 (d) 1392
26. 26.0.34 × 0.3 — where does the decimal point go? (a) 0.00102 (b) 0.0102 (c) 0.102 (d) 1.02
27. 27.0.57 × 0.8 — where does the decimal point go? (a) 4.56 (b) 0.00456 (c) 0.456 (d) 0.0456
28. 28.3.9 × 22 — where does the decimal point go? (a) 858 (b) 85.8 (c) 0.858 (d) 8.58
29. 29.1.2 × 8 — where does the decimal point go? (a) 0.96 (b) 9.6 (c) 0.096 (d) 96
30. 30.0.52 × 46 — where does the decimal point go? (a) 23.92 (b) 2.392 (c) 239.2 (d) 0.2392
31. 31.7.4 × 0.8 — where does the decimal point go? (a) 0.0592 (b) 59.2 (c) 0.592 (d) 5.92
32. 32.0.14 × 0.3 — where does the decimal point go? (a) 0.00042 (b) 0.042 (c) 0.42 (d) 0.0042
33. 33.8.4 × 0.7 — where does the decimal point go? (a) 0.0588 (b) 58.8 (c) 5.88 (d) 0.588
34. 34.2.2 × 0.7 — where does the decimal point go? (a) 0.154 (b) 1.54 (c) 15.4 (d) 0.0154
35. 35.6.1 × 1.7 — where does the decimal point go? (a) 10.37 (b) 1.037 (c) 103.7 (d) 0.1037
36. 36.4.3 × 6 — where does the decimal point go? (a) 25.8 (b) 2.58 (c) 258 (d) 0.258
37. 37.0.21 × 14 — where does the decimal point go? (a) 29.4 (b) 0.0294 (c) 0.294 (d) 2.94
38. 38.0.22 × 0.3 — where does the decimal point go? (a) 0.0066 (b) 0.00066 (c) 0.066 (d) 0.66
39. 39.3.7 × 42 — where does the decimal point go? (a) 1.554 (b) 155.4 (c) 15.54 (d) 1554
40. 40.3.4 × 3 — where does the decimal point go? (a) 0.102 (b) 1.02 (c) 10.2 (d) 102

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