Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 188 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.89² =
2. 2.185 − 88 =
3. 3.532 − 66 =
4. 4.37 × 15 =
5. 5.62 × 15 =
6. 6.35 + 79 + 22 + 23 =
7. 7.2 + 1 + 9 + 8 =
8. 8.44 × 15 =
9. 9.₹8.05 − ₹7.70 =
10. 10.₹47.20 + ₹29.05 =
11. 11.225 ÷ 25 =
12. 12.76 × 50 =
13. 13.89² =
14. 14.Best estimate of 403 × 4? (a) 160 (b) 3200 (c) 1600 (d) 16000
15. 15.14 × 11 =
16. 16.₹9.40 − ₹8.70 =
17. 17.282 + 67 =
18. 18.9 + 9 + 1 + 1 =
19. 19.49² =
20. 20.64 × 5 =
21. 21.₹96.70 + ₹37.70 =
22. 22.9 + 4 + 9 + 1 + 1 =
23. 23.1 + 6 + 1 + 9 =
24. 24.39 × 8 =
25. 25.358 − 27 =
26. 26.830 ÷ 5 =
27. 27.13 × 13 =
28. 28.35 × 15 =
29. 29.77 + 23 + 71 + 44 =
30. 30.399 − 57 =
31. 31.59² =
32. 32.19² =
33. 33.20 × 15 =
34. 34.10% of 150 =
35. 35.63 + 51 + 47 + 37 =
36. 36.Check with nines: 14 × 12 = 168. Correct or wrong? (a) wrong (b) correct
37. 37.1 + 9 + 8 + 4 =
38. 38.513 − 17 =
39. 39.33 × 15 =
40. 40.54 + 39 =

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