Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 532 · 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. 1.213 − 26 =
2. 2.₹32.80 − ₹12.80 =
3. 3.Best estimate of 31 × 52? (a) 150 (b) 3000 (c) 1500 (d) 15000
4. 4.12 × 8 =
5. 5.75 × 50 =
6. 6.19 × 14 =
7. 7.7 + 3 + 7 + 7 + 1 =
8. 8.117 − 19 =
9. 9.Best estimate of 88 × 51? (a) 450 (b) 45000 (c) 4500 (d) 9000
10. 10.Check with nines: 88 × 65 = 5723. Correct or wrong? (a) correct (b) wrong
11. 11.28 × 15 =
12. 12.1 + 1 + 9 + 3 + 1 =
13. 13.Check with nines: 371 + 612 = 982. Correct or wrong? (a) correct (b) wrong
14. 14.20% of 250 =
15. 15.3 + 5 + 1 + 7 + 2 =
16. 16.₹90.35 + ₹47.20 =
17. 17.1150 ÷ 50 =
18. 18.9 + 1 + 1 + 4 + 5 =
19. 19.20% of 120 =
20. 20.590 ÷ 5 =
21. 21.₹70.15 + ₹17.65 =
22. 22.16 × 4 =
23. 23.₹17.65 + ₹6.80 =
24. 24.13 × 15 =
25. 25.1% of 740 =
26. 26.₹20.45 − ₹4.80 =
27. 27.118 × 4 =
28. 28.Best estimate of 89 × 29? (a) 2700 (b) 270 (c) 5400 (d) 27000
29. 29.15 + 61 + 13 + 22 =
30. 30.Best estimate of 898 × 9? (a) 81000 (b) 16200 (c) 810 (d) 8100
31. 31.139 × 4 =
32. 32.31² =
33. 33.21 × 8 =
34. 34.87 × 4 =
35. 35.Check with nines: 705 + 423 = 1128. Correct or wrong? (a) wrong (b) correct
36. 36.7 + 3 + 3 + 8 + 7 =
37. 37.99 − 26 =
38. 38.41 × 5 =
39. 39.27 × 50 =
40. 40.261 + 19 =

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