Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 911 · 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. 1.5% of 20 =
2. 2.Check with nines: 270 + 164 = 434. Correct or wrong? (a) wrong (b) correct
3. 3.198 − 98 =
4. 4.15 × 17 =
5. 5.32 × 5 =
6. 6.49 × 15 =
7. 7.183 + 87 =
8. 8.95 + 17 =
9. 9.₹47.30 − ₹21.40 =
10. 10.Best estimate of 602 × 7? (a) 4200 (b) 420 (c) 42000 (d) 8400
11. 11.11 × 12 =
12. 12.13 × 14 =
13. 13.₹82.30 − ₹3.55 =
14. 14.12 × 15 =
15. 15.45 + 62 + 73 + 45 =
16. 16.22 × 8 =
17. 17.65 ÷ 5 =
18. 18.88 + 43 + 75 + 22 =
19. 19.235 ÷ 5 =
20. 20.46 × 5 =
21. 21.54 − 17 =
22. 22.250 ÷ 50 =
23. 23.1 + 9 + 2 + 9 =
24. 24.Check with nines: 62 × 29 = 1805. Correct or wrong? (a) wrong (b) correct
25. 25.45 × 50 =
26. 26.72 × 50 =
27. 27.6 + 8 + 6 + 4 =
28. 28.Check with nines: 13 × 93 = 1209. Correct or wrong? (a) wrong (b) correct
29. 29.37 + 48 =
30. 30.549 − 96 =
31. 31.12 × 13 =
32. 32.349 − 26 =
33. 33.17 × 18 =
34. 34.18 × 17 =
35. 35.5% of 120 =
36. 36.79² =
37. 37.532 − 29 =
38. 38.Best estimate of 898 × 9? (a) 16200 (b) 810 (c) 8100 (d) 81000
39. 39.32 × 15 =
40. 40.1400 ÷ 50 =

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