Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 97 · 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. 1.128 − 48 =
2. 2.Best estimate of 699 × 8? (a) 11200 (b) 560 (c) 56000 (d) 5600
3. 3.15 × 8 =
4. 4.49² =
5. 5.6 + 7 + 4 + 6 =
6. 6.124 × 4 =
7. 7.81² =
8. 8.25% of 180 =
9. 9.48 × 15 =
10. 10.Best estimate of 32 × 78? (a) 4800 (b) 240 (c) 2400 (d) 24000
11. 11.146 + 57 =
12. 12.59 × 8 =
13. 13.Best estimate of 61 × 21? (a) 120 (b) 2400 (c) 1200 (d) 12000
14. 14.234 − 46 =
15. 15.785 ÷ 5 =
16. 16.50 × 50 =
17. 17.2 + 8 + 8 + 5 + 8 =
18. 18.Best estimate of 69 × 89? (a) 12600 (b) 6300 (c) 630 (d) 63000
19. 19.650 ÷ 50 =
20. 20.55 + 38 =
21. 21.11 × 19 =
22. 22.20% of 680 =
23. 23.32 + 88 + 11 + 16 =
24. 24.Check with nines: 542 + 168 = 710. Correct or wrong? (a) wrong (b) correct
25. 25.6 + 2 + 9 + 4 =
26. 26.156 − 27 =
27. 27.14 × 15 =
28. 28.6 + 4 + 4 + 7 + 2 =
29. 29.Check with nines: 84 × 26 = 2184. Correct or wrong? (a) wrong (b) correct
30. 30.79² =
31. 31.73 × 8 =
32. 32.71² =
33. 33.36 × 15 =
34. 34.31 × 5 =
35. 35.154 + 67 =
36. 36.₹69.75 − ₹9.50 =
37. 37.13 × 14 =
38. 38.21 × 15 =
39. 39.50% of 90 =
40. 40.48 + 39 + 19 + 60 =

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