Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 738 · 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. 1.16 × 11 =
2. 2.₹72.05 + ₹4.75 =
3. 3.45 + 37 =
4. 4.₹34.70 + ₹47.25 =
5. 5.Best estimate of 197 × 5? (a) 100 (b) 10000 (c) 1000 (d) 2000
6. 6.281 − 88 =
7. 7.20 × 4 =
8. 8.175 + 38 =
9. 9.114 × 4 =
10. 10.81² =
11. 11.42 × 5 =
12. 12.37 + 64 + 12 + 89 =
13. 13.10% of 270 =
14. 14.44 × 50 =
15. 15.21² =
16. 16.32 × 8 =
17. 17.Best estimate of 499 × 7? (a) 7000 (b) 35000 (c) 3500 (d) 350
18. 18.48 × 50 =
19. 19.56 × 8 =
20. 20.13 × 17 =
21. 21.1450 ÷ 25 =
22. 22.29 × 50 =
23. 23.81² =
24. 24.Check with nines: 65 × 79 = 5136. Correct or wrong? (a) wrong (b) correct
25. 25.32 + 28 + 38 + 22 =
26. 26.Best estimate of 31 × 22? (a) 1200 (b) 600 (c) 6000 (d) 60
27. 27.14 × 12 =
28. 28.4 + 7 + 3 + 2 =
29. 29.71 × 5 =
30. 30.23 × 50 =
31. 31.142 + 78 =
32. 32.7 + 8 + 1 + 3 =
33. 33.40 × 8 =
34. 34.10% of 190 =
35. 35.41² =
36. 36.Check with nines: 90 × 96 = 8640. Correct or wrong? (a) correct (b) wrong
37. 37.93 × 5 =
38. 38.89 + 98 =
39. 39.22 × 4 =
40. 40.27 + 56 + 50 + 78 =

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