Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 682 · 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 88 × 19? (a) 18000 (b) 3600 (c) 180 (d) 1800
2. 2.53 + 84 + 52 + 83 =
3. 3.525 ÷ 25 =
4. 4.Best estimate of 601 × 9? (a) 540 (b) 10800 (c) 5400 (d) 54000
5. 5.Best estimate of 799 × 7? (a) 11200 (b) 5600 (c) 56000 (d) 560
6. 6.50 × 5 =
7. 7.735 ÷ 5 =
8. 8.Check with nines: 450 + 675 = 1125. Correct or wrong? (a) correct (b) wrong
9. 9.81² =
10. 10.300 − 49 =
11. 11.69² =
12. 12.₹10.50 + ₹23.95 =
13. 13.39 × 15 =
14. 14.Best estimate of 303 × 5? (a) 150 (b) 1500 (c) 15000 (d) 3000
15. 15.3 + 8 + 2 + 7 =
16. 16.₹65.20 − ₹14.25 =
17. 17.39² =
18. 18.13 × 19 =
19. 19.10% of 200 =
20. 20.₹5.25 − ₹5.10 =
21. 21.50% of 850 =
22. 22.71² =
23. 23.615 ÷ 5 =
24. 24.51 × 4 =
25. 25.16 × 4 =
26. 26.₹42.30 − ₹33.35 =
27. 27.1% of 640 =
28. 28.382 + 89 =
29. 29.4 + 2 + 4 + 6 + 3 =
30. 30.20% of 180 =
31. 31.125 ÷ 25 =
32. 32.Best estimate of 202 × 4? (a) 800 (b) 80 (c) 8000 (d) 1600
33. 33.10% of 720 =
34. 34.39 × 5 =
35. 35.71 × 50 =
36. 36.533 − 56 =
37. 37.Best estimate of 498 × 9? (a) 4500 (b) 9000 (c) 450 (d) 45000
38. 38.19 × 13 =
39. 39.6 + 8 + 3 + 4 + 4 =
40. 40.690 ÷ 5 =

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