Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 753 · 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. 1.51² =
2. 2.296 + 17 =
3. 3.74 × 8 =
4. 4.34 × 4 =
5. 5.₹51.60 − ₹31.35 =
6. 6.51 × 50 =
7. 7.73 × 8 =
8. 8.61 × 8 =
9. 9.29² =
10. 10.34 × 50 =
11. 11.79² =
12. 12.Check with nines: 919 + 759 = 1678. Correct or wrong? (a) wrong (b) correct
13. 13.481 − 38 =
14. 14.18 × 15 =
15. 15.₹99.25 + ₹7.20 =
16. 16.1% of 840 =
17. 17.5% of 210 =
18. 18.81² =
19. 19.74 + 17 + 82 + 87 =
20. 20.192 + 69 =
21. 21.14 × 8 =
22. 22.59 × 50 =
23. 23.61² =
24. 24.88 + 14 + 15 + 18 =
25. 25.61² =
26. 26.14 × 16 =
27. 27.4 + 5 + 5 + 6 =
28. 28.29² =
29. 29.29 × 50 =
30. 30.274 − 16 =
31. 31.364 + 17 =
32. 32.21 + 87 + 37 + 16 =
33. 33.Best estimate of 58 × 62? (a) 3600 (b) 36000 (c) 7200 (d) 360
34. 34.Best estimate of 598 × 4? (a) 4800 (b) 240 (c) 2400 (d) 24000
35. 35.68 + 66 + 83 + 21 =
36. 36.373 − 47 =
37. 37.Best estimate of 29 × 88? (a) 27000 (b) 270 (c) 5400 (d) 2700
38. 38.₹48.80 − ₹10.30 =
39. 39.33 × 15 =
40. 40.65 + 13 + 85 + 20 =

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