Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 363 · 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. 1.2 + 8 + 8 + 6 + 5 =
2. 2.67 + 32 + 18 + 77 =
3. 3.₹94.50 + ₹43.60 =
4. 4.64 × 5 =
5. 5.15 × 15 =
6. 6.Best estimate of 21 × 81? (a) 3200 (b) 16000 (c) 160 (d) 1600
7. 7.5 + 5 + 8 + 4 + 5 =
8. 8.300 ÷ 5 =
9. 9.Check with nines: 749 + 906 = 1657. Correct or wrong? (a) wrong (b) correct
10. 10.21 × 15 =
11. 11.158 − 79 =
12. 12.99 − 37 =
13. 13.271 − 37 =
14. 14.75 × 5 =
15. 15.7 + 3 + 9 + 1 =
16. 16.4 + 6 + 5 + 6 =
17. 17.Best estimate of 91 × 28? (a) 270 (b) 5400 (c) 27000 (d) 2700
18. 18.10% of 370 =
19. 19.₹58.70 + ₹47.70 =
20. 20.1800 ÷ 50 =
21. 21.189 − 86 =
22. 22.₹62.30 + ₹18.70 =
23. 23.19² =
24. 24.65 + 16 + 13 + 30 =
25. 25.40 × 15 =
26. 26.25 × 4 =
27. 27.51 × 15 =
28. 28.20 × 5 =
29. 29.Check with nines: 873 + 938 = 1803. Correct or wrong? (a) wrong (b) correct
30. 30.15 × 17 =
31. 31.145 ÷ 5 =
32. 32.184 − 98 =
33. 33.400 + 99 =
34. 34.₹27.10 − ₹15.20 =
35. 35.Best estimate of 78 × 41? (a) 6400 (b) 32000 (c) 320 (d) 3200
36. 36.449 − 19 =
37. 37.52 × 8 =
38. 38.400 ÷ 25 =
39. 39.Best estimate of 42 × 31? (a) 12000 (b) 2400 (c) 1200 (d) 120
40. 40.62 + 23 + 27 + 46 =

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