Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 842 · 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. 1.9.4 × 37 — where does the decimal point go? (a) 3.478 (b) 34.78 (c) 3478 (d) 347.8
2. 2.1.7 × 0.4 — where does the decimal point go? (a) 0.68 (b) 6.8 (c) 0.068 (d) 0.0068
3. 3.2.2 × 2.4 — where does the decimal point go? (a) 5.28 (b) 0.0528 (c) 52.8 (d) 0.528
4. 4.0.98 × 29 — where does the decimal point go? (a) 2.842 (b) 0.2842 (c) 28.42 (d) 284.2
5. 5.6.9 × 1.4 — where does the decimal point go? (a) 9.66 (b) 96.6 (c) 0.0966 (d) 0.966
6. 6.8.8 × 41 — where does the decimal point go? (a) 36.08 (b) 360.8 (c) 3.608 (d) 3608
7. 7.6.6 × 2.9 — where does the decimal point go? (a) 0.1914 (b) 19.14 (c) 191.4 (d) 1.914
8. 8.5.8 × 4 — where does the decimal point go? (a) 23.2 (b) 2.32 (c) 232 (d) 0.232
9. 9.0.49 × 8 — where does the decimal point go? (a) 3.92 (b) 39.2 (c) 0.392 (d) 0.0392
10. 10.0.34 × 39 — where does the decimal point go? (a) 0.1326 (b) 132.6 (c) 1.326 (d) 13.26
11. 11.0.23 × 3 — where does the decimal point go? (a) 6.9 (b) 0.069 (c) 0.69 (d) 0.0069
12. 12.0.98 × 4 — where does the decimal point go? (a) 0.0392 (b) 0.392 (c) 3.92 (d) 39.2
13. 13.6.4 × 0.6 — where does the decimal point go? (a) 0.0384 (b) 3.84 (c) 38.4 (d) 0.384
14. 14.1.5 × 3.9 — where does the decimal point go? (a) 0.0585 (b) 5.85 (c) 58.5 (d) 0.585
15. 15.2.8 × 9 — where does the decimal point go? (a) 25.2 (b) 252 (c) 0.252 (d) 2.52
16. 16.0.81 × 1.5 — where does the decimal point go? (a) 0.01215 (b) 1.215 (c) 0.1215 (d) 12.15
17. 17.0.25 × 39 — where does the decimal point go? (a) 9.75 (b) 0.975 (c) 97.5 (d) 0.0975
18. 18.1.5 × 9 — where does the decimal point go? (a) 13.5 (b) 0.135 (c) 1.35 (d) 135
19. 19.3.4 × 9 — where does the decimal point go? (a) 306 (b) 30.6 (c) 3.06 (d) 0.306
20. 20.0.64 × 0.3 — where does the decimal point go? (a) 0.0192 (b) 1.92 (c) 0.192 (d) 0.00192
21. 21.3.8 × 0.7 — where does the decimal point go? (a) 26.6 (b) 2.66 (c) 0.0266 (d) 0.266
22. 22.0.96 × 26 — where does the decimal point go? (a) 24.96 (b) 2.496 (c) 249.6 (d) 0.2496
23. 23.9.9 × 0.6 — where does the decimal point go? (a) 59.4 (b) 0.594 (c) 0.0594 (d) 5.94
24. 24.5.2 × 4 — where does the decimal point go? (a) 0.208 (b) 20.8 (c) 208 (d) 2.08
25. 25.2.4 × 3 — where does the decimal point go? (a) 0.072 (b) 72 (c) 7.2 (d) 0.72
26. 26.0.72 × 4.6 — where does the decimal point go? (a) 3.312 (b) 0.3312 (c) 0.03312 (d) 33.12
27. 27.8.4 × 4.7 — where does the decimal point go? (a) 3.948 (b) 39.48 (c) 0.3948 (d) 394.8
28. 28.4.5 × 19 — where does the decimal point go? (a) 85.5 (b) 0.855 (c) 855 (d) 8.55
29. 29.0.18 × 2 — where does the decimal point go? (a) 0.36 (b) 0.0036 (c) 3.6 (d) 0.036
30. 30.2.9 × 12 — where does the decimal point go? (a) 34.8 (b) 348 (c) 3.48 (d) 0.348
31. 31.0.92 × 9 — where does the decimal point go? (a) 0.828 (b) 82.8 (c) 8.28 (d) 0.0828
32. 32.0.98 × 3 — where does the decimal point go? (a) 0.294 (b) 29.4 (c) 2.94 (d) 0.0294
33. 33.0.26 × 2.8 — where does the decimal point go? (a) 0.0728 (b) 0.728 (c) 7.28 (d) 0.00728
34. 34.4.5 × 23 — where does the decimal point go? (a) 10.35 (b) 1035 (c) 103.5 (d) 1.035
35. 35.3.7 × 0.4 — where does the decimal point go? (a) 1.48 (b) 14.8 (c) 0.0148 (d) 0.148
36. 36.0.42 × 0.9 — where does the decimal point go? (a) 3.78 (b) 0.378 (c) 0.0378 (d) 0.00378
37. 37.0.88 × 2 — where does the decimal point go? (a) 17.6 (b) 0.0176 (c) 1.76 (d) 0.176
38. 38.0.64 × 0.2 — where does the decimal point go? (a) 0.0128 (b) 0.00128 (c) 1.28 (d) 0.128
39. 39.0.89 × 8 — where does the decimal point go? (a) 71.2 (b) 0.712 (c) 0.0712 (d) 7.12
40. 40.0.16 × 2 — where does the decimal point go? (a) 0.0032 (b) 0.32 (c) 3.2 (d) 0.032

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