Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 469 · 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. 1.37 × 4 =
2. 2.11 × 15 =
3. 3.80 × 50 =
4. 4.36 × 5 =
5. 5.₹61.95 + ₹4.10 =
6. 6.230 − 46 =
7. 7.Check with nines: 859 + 350 = 1213. Correct or wrong? (a) correct (b) wrong
8. 8.499 + 49 =
9. 9.Best estimate of 298 × 8? (a) 24000 (b) 2400 (c) 240 (d) 4800
10. 10.Best estimate of 28 × 92? (a) 270 (b) 5400 (c) 27000 (d) 2700
11. 11.32 + 19 + 48 + 51 =
12. 12.Check with nines: 52 × 98 = 5101. Correct or wrong? (a) wrong (b) correct
13. 13.₹47.15 − ₹39.90 =
14. 14.73 × 4 =
15. 15.Check with nines: 16 × 25 = 399. Correct or wrong? (a) correct (b) wrong
16. 16.53 × 15 =
17. 17.7 + 9 + 1 + 6 + 4 =
18. 18.15 × 12 =
19. 19.352 − 77 =
20. 20.20% of 830 =
21. 21.86 × 4 =
22. 22.151 − 18 =
23. 23.13 × 14 =
24. 24.27 × 15 =
25. 25.1 + 6 + 7 + 4 =
26. 26.Best estimate of 297 × 5? (a) 15000 (b) 150 (c) 1500 (d) 3000
27. 27.Best estimate of 99 × 4? (a) 40 (b) 400 (c) 800 (d) 4000
28. 28.Best estimate of 297 × 8? (a) 24000 (b) 4800 (c) 2400 (d) 240
29. 29.41² =
30. 30.18 × 18 =
31. 31.31 × 5 =
32. 32.45 × 50 =
33. 33.19 × 15 =
34. 34.Best estimate of 703 × 5? (a) 7000 (b) 35000 (c) 350 (d) 3500
35. 35.246 + 17 =
36. 36.29 × 4 =
37. 37.436 + 48 =
38. 38.453 − 79 =
39. 39.₹86.55 − ₹17.10 =
40. 40.14 × 11 =

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