Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 435 · 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. 1.14 × 12 =
2. 2.Best estimate of 203 × 7? (a) 14000 (b) 140 (c) 1400 (d) 2800
3. 3.Best estimate of 72 × 48? (a) 3500 (b) 7000 (c) 350 (d) 35000
4. 4.16 × 13 =
5. 5.51 × 15 =
6. 6.5 + 2 + 8 + 9 + 6 =
7. 7.Best estimate of 22 × 48? (a) 10000 (b) 1000 (c) 100 (d) 2000
8. 8.129 − 46 =
9. 9.14 × 14 =
10. 10.278 − 47 =
11. 11.11 × 13 =
12. 12.130 − 77 =
13. 13.8 + 2 + 1 + 3 + 8 =
14. 14.11 × 11 =
15. 15.38 × 15 =
16. 16.₹80.60 − ₹13.45 =
17. 17.₹32.05 − ₹19.75 =
18. 18.91² =
19. 19.11 × 15 =
20. 20.475 ÷ 25 =
21. 21.75 ÷ 25 =
22. 22.58 × 50 =
23. 23.61² =
24. 24.₹86.35 − ₹3.40 =
25. 25.1375 ÷ 25 =
26. 26.459 + 77 =
27. 27.330 − 38 =
28. 28.Best estimate of 303 × 8? (a) 2400 (b) 24000 (c) 4800 (d) 240
29. 29.191 + 78 =
30. 30.519 − 48 =
31. 31.Best estimate of 72 × 28? (a) 4200 (b) 21000 (c) 2100 (d) 210
32. 32.491 − 56 =
33. 33.Best estimate of 399 × 5? (a) 4000 (b) 20000 (c) 200 (d) 2000
34. 34.Best estimate of 31 × 62? (a) 18000 (b) 3600 (c) 180 (d) 1800
35. 35.600 ÷ 50 =
36. 36.15 × 19 =
37. 37.20% of 600 =
38. 38.64 + 48 =
39. 39.3 + 5 + 7 + 8 + 8 =
40. 40.29² =

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