Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 634 · 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. 1.91² =
2. 2.1100 ÷ 25 =
3. 3.66 × 50 =
4. 4.98 − 66 =
5. 5.910 ÷ 5 =
6. 6.28 × 8 =
7. 7.Best estimate of 28 × 28? (a) 90 (b) 900 (c) 9000 (d) 1800
8. 8.50 × 8 =
9. 9.22 × 8 =
10. 10.₹18.20 − ₹17.15 =
11. 11.43 × 15 =
12. 12.55 × 15 =
13. 13.267 − 27 =
14. 14.264 − 86 =
15. 15.21² =
16. 16.Check with nines: 282 + 286 = 568. Correct or wrong? (a) wrong (b) correct
17. 17.34 × 5 =
18. 18.29² =
19. 19.29² =
20. 20.35 + 24 + 12 + 43 =
21. 21.135 ÷ 5 =
22. 22.Check with nines: 32 × 94 = 3010. Correct or wrong? (a) wrong (b) correct
23. 23.Check with nines: 132 + 890 = 1022. Correct or wrong? (a) correct (b) wrong
24. 24.47 × 15 =
25. 25.5 + 8 + 2 + 8 + 7 =
26. 26.Best estimate of 88 × 69? (a) 63000 (b) 630 (c) 6300 (d) 12600
27. 27.Check with nines: 28 × 72 = 2016. Correct or wrong? (a) correct (b) wrong
28. 28.493 + 79 =
29. 29.26 × 15 =
30. 30.₹25.40 + ₹8.55 =
31. 31.Best estimate of 32 × 58? (a) 3600 (b) 18000 (c) 180 (d) 1800
32. 32.148 − 16 =
33. 33.300 ÷ 50 =
34. 34.14 × 16 =
35. 35.53 + 56 + 87 + 52 =
36. 36.20 × 50 =
37. 37.79² =
38. 38.Best estimate of 202 × 4? (a) 1600 (b) 800 (c) 8000 (d) 80
39. 39.196 − 77 =
40. 40.84 + 39 =

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