Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 725 · 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.Best estimate of 52 × 79? (a) 40000 (b) 400 (c) 4000 (d) 8000
2. 2.12 × 12 =
3. 3.19 × 16 =
4. 4.40 + 14 + 71 + 86 =
5. 5.41² =
6. 6.64 + 37 + 16 + 83 =
7. 7.437 + 67 =
8. 8.1950 ÷ 50 =
9. 9.1375 ÷ 25 =
10. 10.64 + 64 + 25 + 30 =
11. 11.13 × 11 =
12. 12.61 + 60 + 56 + 73 =
13. 13.25 + 23 + 50 + 73 =
14. 14.25 × 15 =
15. 15.Best estimate of 68 × 28? (a) 210 (b) 21000 (c) 4200 (d) 2100
16. 16.23 + 46 + 33 + 89 =
17. 17.Best estimate of 22 × 42? (a) 800 (b) 80 (c) 8000 (d) 1600
18. 18.353 − 87 =
19. 19.81 + 27 + 82 + 52 =
20. 20.900 ÷ 50 =
21. 21.7 + 6 + 5 + 5 + 5 =
22. 22.Check with nines: 56 × 83 = 4648. Correct or wrong? (a) wrong (b) correct
23. 23.5 + 9 + 4 + 6 =
24. 24.20% of 880 =
25. 25.62 × 4 =
26. 26.53 + 47 + 27 + 48 =
27. 27.64 × 5 =
28. 28.4 + 7 + 7 + 8 + 3 =
29. 29.580 ÷ 5 =
30. 30.15 × 19 =
31. 31.9 × 15 =
32. 32.59 × 50 =
33. 33.376 − 39 =
34. 34.Best estimate of 78 × 71? (a) 11200 (b) 560 (c) 56000 (d) 5600
35. 35.30 × 5 =
36. 36.409 + 87 =
37. 37.62 × 50 =
38. 38.12 + 28 + 68 + 75 =
39. 39.49 × 4 =
40. 40.275 + 68 =

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