Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 723 · 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. 1.31² =
2. 2.28 × 8 =
3. 3.20 × 15 =
4. 4.Best estimate of 303 × 7? (a) 21000 (b) 210 (c) 4200 (d) 2100
5. 5.450 ÷ 50 =
6. 6.21 × 15 =
7. 7.33 × 15 =
8. 8.4 + 8 + 1 + 6 + 6 =
9. 9.925 ÷ 5 =
10. 10.13 × 14 =
11. 11.61² =
12. 12.₹30.25 + ₹22.40 =
13. 13.151 + 39 =
14. 14.42 × 4 =
15. 15.₹90.75 − ₹20.45 =
16. 16.₹77.40 + ₹6.05 =
17. 17.61 × 8 =
18. 18.102 − 48 =
19. 19.49 × 8 =
20. 20.92 − 86 =
21. 21.Check with nines: 19 × 58 = 1098. Correct or wrong? (a) correct (b) wrong
22. 22.434 + 57 =
23. 23.5 + 9 + 9 + 1 + 6 =
24. 24.Check with nines: 34 × 45 = 1532. Correct or wrong? (a) wrong (b) correct
25. 25.42 × 8 =
26. 26.Check with nines: 735 + 625 = 1362. Correct or wrong? (a) correct (b) wrong
27. 27.300 ÷ 50 =
28. 28.46 × 5 =
29. 29.287 − 47 =
30. 30.Best estimate of 699 × 7? (a) 4900 (b) 490 (c) 49000 (d) 9800
31. 31.7 + 3 + 5 + 3 =
32. 32.9 + 2 + 2 + 8 =
33. 33.8 + 6 + 2 + 9 + 4 =
34. 34.Check with nines: 56 × 77 = 4312. Correct or wrong? (a) wrong (b) correct
35. 35.32 + 25 + 61 + 72 =
36. 36.₹23.65 + ₹15.85 =
37. 37.463 − 37 =
38. 38.155 ÷ 5 =
39. 39.27 + 26 + 67 + 50 =
40. 40.332 − 69 =

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