Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 125 · 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. 1.8 × 15 =
2. 2.339 + 19 =
3. 3.20% of 470 =
4. 4.8 + 5 + 7 + 5 =
5. 5.6 + 4 + 8 + 2 + 2 =
6. 6.5 + 1 + 9 + 9 =
7. 7.Check with nines: 19 × 12 = 228. Correct or wrong? (a) correct (b) wrong
8. 8.18 × 50 =
9. 9.81² =
10. 10.Check with nines: 485 + 182 = 664. Correct or wrong? (a) correct (b) wrong
11. 11.437 + 37 =
12. 12.₹89.30 − ₹4.20 =
13. 13.8 + 8 + 1 + 2 =
14. 14.463 + 17 =
15. 15.142 + 27 =
16. 16.4 + 9 + 1 + 3 + 7 =
17. 17.89 + 53 + 54 + 64 =
18. 18.196 − 38 =
19. 19.Check with nines: 244 + 864 = 1108. Correct or wrong? (a) wrong (b) correct
20. 20.9 + 4 + 3 + 7 =
21. 21.Best estimate of 72 × 41? (a) 2800 (b) 28000 (c) 280 (d) 5600
22. 22.50% of 600 =
23. 23.106 − 96 =
24. 24.5 + 5 + 1 + 5 =
25. 25.18 × 15 =
26. 26.22 × 15 =
27. 27.560 ÷ 5 =
28. 28.45 × 50 =
29. 29.11 × 16 =
30. 30.Best estimate of 71 × 91? (a) 6300 (b) 63000 (c) 630 (d) 12600
31. 31.18 × 15 =
32. 32.238 − 19 =
33. 33.19 × 19 =
34. 34.75 × 5 =
35. 35.55 × 15 =
36. 36.72 × 5 =
37. 37.30 × 4 =
38. 38.13 × 18 =
39. 39.1 + 1 + 7 + 3 =
40. 40.₹18.35 + ₹25.40 =

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