Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 490 · 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.₹28.15 − ₹9.10 =
2. 2.81² =
3. 3.13 × 16 =
4. 4.5% of 530 =
5. 5.31² =
6. 6.142 − 47 =
7. 7.Best estimate of 79 × 58? (a) 48000 (b) 480 (c) 9600 (d) 4800
8. 8.Best estimate of 499 × 5? (a) 2500 (b) 5000 (c) 25000 (d) 250
9. 9.20% of 250 =
10. 10.45 × 5 =
11. 11.60 + 54 + 76 + 61 =
12. 12.Best estimate of 697 × 9? (a) 630 (b) 6300 (c) 63000 (d) 12600
13. 13.36 × 50 =
14. 14.204 − 18 =
15. 15.61 × 5 =
16. 16.96 + 98 =
17. 17.92 × 4 =
18. 18.31² =
19. 19.6 + 1 + 9 + 4 + 1 =
20. 20.₹46.55 − ₹18.50 =
21. 21.19 × 15 =
22. 22.23 × 4 =
23. 23.49 × 5 =
24. 24.55 × 4 =
25. 25.266 − 46 =
26. 26.14 × 5 =
27. 27.6 + 3 + 3 + 4 =
28. 28.50 × 15 =
29. 29.19 × 14 =
30. 30.78 × 50 =
31. 31.₹67.35 − ₹37.10 =
32. 32.31² =
33. 33.60 + 40 + 62 + 80 =
34. 34.19 × 17 =
35. 35.Best estimate of 102 × 9? (a) 900 (b) 9000 (c) 90 (d) 1800
36. 36.13 × 15 =
37. 37.225 ÷ 25 =
38. 38.18 × 18 =
39. 39.Check with nines: 30 × 99 = 2975. Correct or wrong? (a) correct (b) wrong
40. 40.72 × 4 =

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