Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 69 · 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 801 × 6? (a) 9600 (b) 480 (c) 4800 (d) 48000
2. 2.62 × 50 =
3. 3.Best estimate of 103 × 8? (a) 1600 (b) 80 (c) 800 (d) 8000
4. 4.62 × 15 =
5. 5.11 × 17 =
6. 6.5% of 620 =
7. 7.41² =
8. 8.10% of 530 =
9. 9.19 × 14 =
10. 10.9 × 15 =
11. 11.553 − 66 =
12. 12.Best estimate of 201 × 7? (a) 140 (b) 2800 (c) 14000 (d) 1400
13. 13.5 + 2 + 3 + 7 =
14. 14.290 − 17 =
15. 15.97 × 5 =
16. 16.67 × 5 =
17. 17.29 × 15 =
18. 18.Best estimate of 598 × 5? (a) 30000 (b) 300 (c) 3000 (d) 6000
19. 19.58 + 99 =
20. 20.Best estimate of 58 × 38? (a) 2400 (b) 24000 (c) 4800 (d) 240
21. 21.Check with nines: 45 × 63 = 2840. Correct or wrong? (a) correct (b) wrong
22. 22.Check with nines: 57 × 25 = 1425. Correct or wrong? (a) correct (b) wrong
23. 23.Best estimate of 702 × 6? (a) 42000 (b) 420 (c) 4200 (d) 8400
24. 24.5 + 5 + 8 + 9 =
25. 25.53 × 8 =
26. 26.55 + 99 =
27. 27.1425 ÷ 25 =
28. 28.430 − 78 =
29. 29.73 + 68 =
30. 30.328 + 68 =
31. 31.40 × 15 =
32. 32.15 × 18 =
33. 33.233 − 67 =
34. 34.79² =
35. 35.Best estimate of 903 × 9? (a) 16200 (b) 8100 (c) 81000 (d) 810
36. 36.19² =
37. 37.₹19.55 − ₹6.75 =
38. 38.15% of 90 =
39. 39.34 × 8 =
40. 40.340 + 67 =

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