Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 932 · 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.₹78.60 − ₹29.40 =
2. 2.8 + 4 + 2 + 3 =
3. 3.296 − 76 =
4. 4.15 × 16 =
5. 5.1500 ÷ 25 =
6. 6.114 + 89 =
7. 7.2 + 9 + 8 + 1 =
8. 8.Best estimate of 397 × 3? (a) 1200 (b) 120 (c) 2400 (d) 12000
9. 9.25% of 500 =
10. 10.Best estimate of 402 × 3? (a) 12000 (b) 2400 (c) 1200 (d) 120
11. 11.₹93.25 − ₹42.45 =
12. 12.44 × 8 =
13. 13.33 × 50 =
14. 14.23 + 86 + 57 + 57 =
15. 15.9 + 5 + 7 + 1 =
16. 16.59 × 4 =
17. 17.1% of 890 =
18. 18.₹13.75 − ₹10.95 =
19. 19.8 + 1 + 1 + 2 + 2 =
20. 20.2 + 5 + 8 + 2 =
21. 21.Check with nines: 399 + 321 = 720. Correct or wrong? (a) wrong (b) correct
22. 22.94 × 50 =
23. 23.65 × 50 =
24. 24.Best estimate of 52 × 82? (a) 40000 (b) 4000 (c) 400 (d) 8000
25. 25.215 ÷ 5 =
26. 26.Best estimate of 19 × 48? (a) 10000 (b) 100 (c) 2000 (d) 1000
27. 27.2000 ÷ 50 =
28. 28.16 × 4 =
29. 29.₹26.95 − ₹12.05 =
30. 30.Check with nines: 41 × 58 = 2378. Correct or wrong? (a) correct (b) wrong
31. 31.41² =
32. 32.48 × 50 =
33. 33.Best estimate of 92 × 58? (a) 10800 (b) 5400 (c) 540 (d) 54000
34. 34.15 × 12 =
35. 35.79 × 5 =
36. 36.28 × 15 =
37. 37.Best estimate of 61 × 52? (a) 300 (b) 3000 (c) 30000 (d) 6000
38. 38.Best estimate of 49 × 78? (a) 400 (b) 4000 (c) 40000 (d) 8000
39. 39.63 + 32 + 85 + 30 =
40. 40.17 × 15 =

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