Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 718 · 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. 1.7 + 2 + 8 + 4 =
2. 2.1200 ÷ 50 =
3. 3.Best estimate of 38 × 49? (a) 20000 (b) 200 (c) 4000 (d) 2000
4. 4.64 × 8 =
5. 5.56 × 4 =
6. 6.30 × 5 =
7. 7.15 × 15 =
8. 8.9 + 6 + 4 + 2 =
9. 9.19 × 12 =
10. 10.51² =
11. 11.Best estimate of 603 × 3? (a) 180 (b) 18000 (c) 3600 (d) 1800
12. 12.168 − 36 =
13. 13.Best estimate of 102 × 4? (a) 800 (b) 400 (c) 40 (d) 4000
14. 14.Best estimate of 703 × 7? (a) 4900 (b) 9800 (c) 490 (d) 49000
15. 15.11 × 15 =
16. 16.21 × 50 =
17. 17.1% of 520 =
18. 18.61² =
19. 19.200 ÷ 50 =
20. 20.51² =
21. 21.86 + 29 =
22. 22.16 × 19 =
23. 23.5% of 330 =
24. 24.183 + 89 =
25. 25.Best estimate of 98 × 8? (a) 1600 (b) 80 (c) 8000 (d) 800
26. 26.6 + 1 + 6 + 6 + 9 =
27. 27.16 × 18 =
28. 28.41 × 15 =
29. 29.25 × 8 =
30. 30.14 × 15 =
31. 31.10 × 15 =
32. 32.38 + 37 + 27 + 26 =
33. 33.33 + 48 + 21 + 67 =
34. 34.51² =
35. 35.4 + 3 + 9 + 6 + 4 =
36. 36.Best estimate of 88 × 31? (a) 5400 (b) 2700 (c) 27000 (d) 270
37. 37.10% of 440 =
38. 38.600 ÷ 50 =
39. 39.111 × 4 =
40. 40.Check with nines: 194 + 919 = 1113. Correct or wrong? (a) correct (b) wrong

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