Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 207 · 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. 1.378 − 17 =
2. 2.31² =
3. 3.176 + 38 =
4. 4.Best estimate of 603 × 3? (a) 3600 (b) 180 (c) 1800 (d) 18000
5. 5.74 × 50 =
6. 6.Best estimate of 92 × 38? (a) 360 (b) 3600 (c) 36000 (d) 7200
7. 7.2 + 8 + 2 + 8 + 8 =
8. 8.14 × 15 =
9. 9.58 + 28 + 40 + 25 =
10. 10.Check with nines: 36 × 17 = 615. Correct or wrong? (a) wrong (b) correct
11. 11.426 − 97 =
12. 12.71 + 13 + 12 + 68 =
13. 13.66 + 55 + 76 + 82 =
14. 14.322 + 19 =
15. 15.18 × 18 =
16. 16.26 × 4 =
17. 17.Check with nines: 29 × 84 = 2439. Correct or wrong? (a) correct (b) wrong
18. 18.20 × 4 =
19. 19.31² =
20. 20.154 + 77 =
21. 21.10% of 440 =
22. 22.Best estimate of 203 × 4? (a) 1600 (b) 8000 (c) 800 (d) 80
23. 23.Best estimate of 39 × 68? (a) 280 (b) 5600 (c) 28000 (d) 2800
24. 24.Best estimate of 58 × 42? (a) 2400 (b) 24000 (c) 240 (d) 4800
25. 25.₹61.15 − ₹37.60 =
26. 26.54 × 15 =
27. 27.850 ÷ 25 =
28. 28.₹50.35 + ₹33.85 =
29. 29.Best estimate of 897 × 4? (a) 36000 (b) 3600 (c) 7200 (d) 360
30. 30.₹50.75 − ₹24.65 =
31. 31.Check with nines: 60 × 37 = 2220. Correct or wrong? (a) correct (b) wrong
32. 32.35 × 50 =
33. 33.5 + 2 + 8 + 4 + 2 =
34. 34.24 × 15 =
35. 35.Check with nines: 80 × 60 = 4794. Correct or wrong? (a) correct (b) wrong
36. 36.147 × 4 =
37. 37.53 + 19 + 67 + 86 =
38. 38.121 + 19 =
39. 39.45 + 78 =
40. 40.Check with nines: 844 + 895 = 1739. Correct or wrong? (a) wrong (b) correct

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