Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 964 · 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. 1.7.4 × 2 — where does the decimal point go? (a) 1.48 (b) 148 (c) 0.148 (d) 14.8
2. 2.3.8 × 0.4 — where does the decimal point go? (a) 15.2 (b) 0.0152 (c) 0.152 (d) 1.52
3. 3.0.86 × 8 — where does the decimal point go? (a) 6.88 (b) 0.0688 (c) 0.688 (d) 68.8
4. 4.0.65 × 7 — where does the decimal point go? (a) 45.5 (b) 4.55 (c) 0.0455 (d) 0.455
5. 5.0.31 × 0.4 — where does the decimal point go? (a) 1.24 (b) 0.0124 (c) 0.124 (d) 0.00124
6. 6.3.9 × 3.1 — where does the decimal point go? (a) 0.1209 (b) 1.209 (c) 12.09 (d) 120.9
7. 7.6.5 × 0.7 — where does the decimal point go? (a) 0.455 (b) 0.0455 (c) 4.55 (d) 45.5
8. 8.5.3 × 3 — where does the decimal point go? (a) 1.59 (b) 0.159 (c) 15.9 (d) 159
9. 9.7.3 × 8 — where does the decimal point go? (a) 0.584 (b) 58.4 (c) 584 (d) 5.84
10. 10.2.1 × 2 — where does the decimal point go? (a) 4.2 (b) 0.042 (c) 42 (d) 0.42
11. 11.0.35 × 0.7 — where does the decimal point go? (a) 2.45 (b) 0.00245 (c) 0.0245 (d) 0.245
12. 12.0.47 × 2 — where does the decimal point go? (a) 0.094 (b) 0.94 (c) 0.0094 (d) 9.4
13. 13.8.1 × 6 — where does the decimal point go? (a) 48.6 (b) 486 (c) 4.86 (d) 0.486
14. 14.0.85 × 3.3 — where does the decimal point go? (a) 2.805 (b) 28.05 (c) 0.02805 (d) 0.2805
15. 15.0.32 × 0.6 — where does the decimal point go? (a) 1.92 (b) 0.0192 (c) 0.00192 (d) 0.192
16. 16.0.12 × 4.2 — where does the decimal point go? (a) 0.0504 (b) 0.00504 (c) 0.504 (d) 5.04
17. 17.9.7 × 23 — where does the decimal point go? (a) 22.31 (b) 223.1 (c) 2.231 (d) 2231
18. 18.0.64 × 3 — where does the decimal point go? (a) 0.192 (b) 19.2 (c) 0.0192 (d) 1.92
19. 19.4.8 × 4.6 — where does the decimal point go? (a) 220.8 (b) 22.08 (c) 2.208 (d) 0.2208
20. 20.9.3 × 23 — where does the decimal point go? (a) 21.39 (b) 2139 (c) 213.9 (d) 2.139
21. 21.0.34 × 0.9 — where does the decimal point go? (a) 3.06 (b) 0.00306 (c) 0.306 (d) 0.0306
22. 22.3.6 × 3 — where does the decimal point go? (a) 0.108 (b) 108 (c) 1.08 (d) 10.8
23. 23.0.57 × 0.7 — where does the decimal point go? (a) 0.399 (b) 3.99 (c) 0.00399 (d) 0.0399
24. 24.0.26 × 3 — where does the decimal point go? (a) 0.078 (b) 7.8 (c) 0.0078 (d) 0.78
25. 25.0.88 × 8 — where does the decimal point go? (a) 70.4 (b) 0.0704 (c) 0.704 (d) 7.04
26. 26.9.3 × 2 — where does the decimal point go? (a) 0.186 (b) 186 (c) 18.6 (d) 1.86
27. 27.0.21 × 0.3 — where does the decimal point go? (a) 0.063 (b) 0.0063 (c) 0.63 (d) 0.00063
28. 28.1.5 × 2.9 — where does the decimal point go? (a) 4.35 (b) 43.5 (c) 0.0435 (d) 0.435
29. 29.1.4 × 2.2 — where does the decimal point go? (a) 3.08 (b) 0.308 (c) 30.8 (d) 0.0308
30. 30.2.4 × 7 — where does the decimal point go? (a) 168 (b) 16.8 (c) 0.168 (d) 1.68
31. 31.6.7 × 2 — where does the decimal point go? (a) 134 (b) 1.34 (c) 0.134 (d) 13.4
32. 32.2.8 × 0.4 — where does the decimal point go? (a) 11.2 (b) 0.112 (c) 1.12 (d) 0.0112
33. 33.1.2 × 0.2 — where does the decimal point go? (a) 2.4 (b) 0.024 (c) 0.0024 (d) 0.24
34. 34.4.4 × 6 — where does the decimal point go? (a) 264 (b) 0.264 (c) 26.4 (d) 2.64
35. 35.0.19 × 4.2 — where does the decimal point go? (a) 0.00798 (b) 0.798 (c) 0.0798 (d) 7.98
36. 36.0.52 × 2.1 — where does the decimal point go? (a) 0.01092 (b) 10.92 (c) 1.092 (d) 0.1092
37. 37.0.49 × 45 — where does the decimal point go? (a) 220.5 (b) 2.205 (c) 22.05 (d) 0.2205
38. 38.0.55 × 2.1 — where does the decimal point go? (a) 0.1155 (b) 1.155 (c) 0.01155 (d) 11.55
39. 39.6.3 × 8 — where does the decimal point go? (a) 5.04 (b) 50.4 (c) 0.504 (d) 504
40. 40.3.3 × 4 — where does the decimal point go? (a) 132 (b) 13.2 (c) 0.132 (d) 1.32

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