Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 757 · 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. 1.68 × 5 =
2. 2.4 + 9 + 8 + 2 + 8 =
3. 3.10% of 880 =
4. 4.14 × 11 =
5. 5.3 + 7 + 2 + 2 + 8 =
6. 6.226 + 77 =
7. 7.18 × 12 =
8. 8.400 + 67 =
9. 9.296 + 88 =
10. 10.71 + 45 + 39 + 22 =
11. 11.50% of 190 =
12. 12.62 + 40 + 39 + 33 =
13. 13.49² =
14. 14.84 − 57 =
15. 15.29 + 37 =
16. 16.1 + 1 + 9 + 4 =
17. 17.1250 ÷ 50 =
18. 18.14 × 19 =
19. 19.Best estimate of 78 × 18? (a) 16000 (b) 3200 (c) 160 (d) 1600
20. 20.Best estimate of 68 × 81? (a) 560 (b) 5600 (c) 56000 (d) 11200
21. 21.31 × 8 =
22. 22.91² =
23. 23.12 × 18 =
24. 24.18 × 11 =
25. 25.12 × 17 =
26. 26.2 + 9 + 1 + 9 =
27. 27.9 + 8 + 2 + 2 =
28. 28.74 × 4 =
29. 29.Best estimate of 88 × 72? (a) 12600 (b) 63000 (c) 6300 (d) 630
30. 30.15 × 15 =
31. 31.61 × 5 =
32. 32.Check with nines: 59 × 84 = 4956. Correct or wrong? (a) correct (b) wrong
33. 33.Check with nines: 27 × 85 = 2295. Correct or wrong? (a) correct (b) wrong
34. 34.74 + 80 + 79 + 79 =
35. 35.3 + 7 + 6 + 7 =
36. 36.Best estimate of 297 × 5? (a) 3000 (b) 1500 (c) 150 (d) 15000
37. 37.16 × 16 =
38. 38.499 + 78 =
39. 39.₹96.95 − ₹25.30 =
40. 40.100 ÷ 5 =

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