Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 978 · 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. 1.0.71 × 0.9 — where does the decimal point go? (a) 0.639 (b) 6.39 (c) 0.0639 (d) 0.00639
2. 2.1.5 × 1.3 — where does the decimal point go? (a) 0.0195 (b) 0.195 (c) 19.5 (d) 1.95
3. 3.8.9 × 5 — where does the decimal point go? (a) 445 (b) 44.5 (c) 0.445 (d) 4.45
4. 4.0.68 × 6 — where does the decimal point go? (a) 40.8 (b) 0.0408 (c) 0.408 (d) 4.08
5. 5.7.2 × 4.9 — where does the decimal point go? (a) 35.28 (b) 352.8 (c) 0.3528 (d) 3.528
6. 6.9.5 × 9 — where does the decimal point go? (a) 855 (b) 8.55 (c) 85.5 (d) 0.855
7. 7.1.4 × 0.7 — where does the decimal point go? (a) 0.098 (b) 9.8 (c) 0.0098 (d) 0.98
8. 8.7.7 × 7 — where does the decimal point go? (a) 53.9 (b) 539 (c) 5.39 (d) 0.539
9. 9.0.59 × 0.6 — where does the decimal point go? (a) 3.54 (b) 0.354 (c) 0.00354 (d) 0.0354
10. 10.0.18 × 7 — where does the decimal point go? (a) 0.0126 (b) 1.26 (c) 12.6 (d) 0.126
11. 11.0.29 × 36 — where does the decimal point go? (a) 104.4 (b) 0.1044 (c) 10.44 (d) 1.044
12. 12.1.6 × 4 — where does the decimal point go? (a) 64 (b) 6.4 (c) 0.064 (d) 0.64
13. 13.0.14 × 0.9 — where does the decimal point go? (a) 0.0126 (b) 0.126 (c) 0.00126 (d) 1.26
14. 14.4.3 × 25 — where does the decimal point go? (a) 107.5 (b) 1.075 (c) 1075 (d) 10.75
15. 15.5.5 × 11 — where does the decimal point go? (a) 0.605 (b) 6.05 (c) 60.5 (d) 605
16. 16.0.55 × 43 — where does the decimal point go? (a) 2.365 (b) 0.2365 (c) 23.65 (d) 236.5
17. 17.0.61 × 0.7 — where does the decimal point go? (a) 4.27 (b) 0.0427 (c) 0.00427 (d) 0.427
18. 18.2.8 × 34 — where does the decimal point go? (a) 0.952 (b) 9.52 (c) 952 (d) 95.2
19. 19.0.83 × 9 — where does the decimal point go? (a) 0.747 (b) 0.0747 (c) 74.7 (d) 7.47
20. 20.0.87 × 2 — where does the decimal point go? (a) 0.174 (b) 1.74 (c) 17.4 (d) 0.0174
21. 21.0.51 × 0.8 — where does the decimal point go? (a) 0.0408 (b) 0.408 (c) 0.00408 (d) 4.08
22. 22.0.84 × 1.4 — where does the decimal point go? (a) 0.1176 (b) 1.176 (c) 0.01176 (d) 11.76
23. 23.2.8 × 7 — where does the decimal point go? (a) 1.96 (b) 0.196 (c) 196 (d) 19.6
24. 24.0.47 × 13 — where does the decimal point go? (a) 6.11 (b) 0.611 (c) 61.1 (d) 0.0611
25. 25.6.6 × 0.6 — where does the decimal point go? (a) 3.96 (b) 39.6 (c) 0.0396 (d) 0.396
26. 26.8.2 × 0.3 — where does the decimal point go? (a) 0.0246 (b) 0.246 (c) 24.6 (d) 2.46
27. 27.3.2 × 0.6 — where does the decimal point go? (a) 19.2 (b) 1.92 (c) 0.0192 (d) 0.192
28. 28.3.3 × 2.9 — where does the decimal point go? (a) 0.0957 (b) 9.57 (c) 0.957 (d) 95.7
29. 29.5.5 × 37 — where does the decimal point go? (a) 2035 (b) 2.035 (c) 203.5 (d) 20.35
30. 30.0.78 × 32 — where does the decimal point go? (a) 249.6 (b) 0.2496 (c) 24.96 (d) 2.496
31. 31.5.1 × 22 — where does the decimal point go? (a) 112.2 (b) 1.122 (c) 1122 (d) 11.22
32. 32.0.68 × 3 — where does the decimal point go? (a) 0.0204 (b) 0.204 (c) 2.04 (d) 20.4
33. 33.0.56 × 1.7 — where does the decimal point go? (a) 0.952 (b) 0.0952 (c) 9.52 (d) 0.00952
34. 34.0.54 × 7 — where does the decimal point go? (a) 3.78 (b) 0.378 (c) 0.0378 (d) 37.8
35. 35.0.56 × 2 — where does the decimal point go? (a) 0.112 (b) 0.0112 (c) 1.12 (d) 11.2
36. 36.3.9 × 0.8 — where does the decimal point go? (a) 0.0312 (b) 3.12 (c) 31.2 (d) 0.312
37. 37.9.7 × 3 — where does the decimal point go? (a) 29.1 (b) 291 (c) 0.291 (d) 2.91
38. 38.0.39 × 0.3 — where does the decimal point go? (a) 0.117 (b) 0.00117 (c) 0.0117 (d) 1.17
39. 39.0.92 × 3 — where does the decimal point go? (a) 27.6 (b) 2.76 (c) 0.0276 (d) 0.276
40. 40.5.8 × 0.3 — where does the decimal point go? (a) 0.174 (b) 0.0174 (c) 17.4 (d) 1.74

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