Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 665 · 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. 1.9 + 2 + 1 + 7 =
2. 2.715 ÷ 5 =
3. 3.Best estimate of 38 × 89? (a) 36000 (b) 7200 (c) 360 (d) 3600
4. 4.₹83.40 + ₹26.10 =
5. 5.300 ÷ 50 =
6. 6.17 × 8 =
7. 7.240 − 66 =
8. 8.24 × 15 =
9. 9.95 ÷ 5 =
10. 10.145 + 88 =
11. 11.₹50.20 − ₹2.75 =
12. 12.2000 ÷ 50 =
13. 13.34 × 5 =
14. 14.16 × 18 =
15. 15.Best estimate of 69 × 61? (a) 42000 (b) 8400 (c) 420 (d) 4200
16. 16.Best estimate of 503 × 5? (a) 5000 (b) 2500 (c) 25000 (d) 250
17. 17.18 × 16 =
18. 18.₹63.75 − ₹10.85 =
19. 19.Best estimate of 58 × 32? (a) 3600 (b) 18000 (c) 180 (d) 1800
20. 20.16 × 18 =
21. 21.47 × 8 =
22. 22.102 + 99 =
23. 23.297 − 16 =
24. 24.4 + 5 + 5 + 8 =
25. 25.17 × 11 =
26. 26.386 + 97 =
27. 27.331 + 47 =
28. 28.215 ÷ 5 =
29. 29.Best estimate of 299 × 8? (a) 24000 (b) 240 (c) 4800 (d) 2400
30. 30.36 + 59 + 74 + 46 =
31. 31.458 + 57 =
32. 32.Best estimate of 199 × 7? (a) 2800 (b) 1400 (c) 140 (d) 14000
33. 33.91² =
34. 34.17 × 18 =
35. 35.9 + 9 + 1 + 3 =
36. 36.5% of 660 =
37. 37.81 + 72 + 55 + 64 =
38. 38.58 × 15 =
39. 39.Best estimate of 61 × 29? (a) 3600 (b) 180 (c) 1800 (d) 18000
40. 40.21 + 54 + 59 + 40 =

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