Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 44 · 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. 1.5 + 3 + 7 + 8 + 3 =
2. 2.87 + 19 + 31 + 88 =
3. 3.Check with nines: 86 × 52 = 4472. Correct or wrong? (a) wrong (b) correct
4. 4.600 ÷ 50 =
5. 5.4 + 1 + 9 + 5 =
6. 6.625 ÷ 25 =
7. 7.95 × 5 =
8. 8.₹99.35 + ₹48.50 =
9. 9.29 × 50 =
10. 10.5 × 15 =
11. 11.Best estimate of 199 × 3? (a) 600 (b) 6000 (c) 60 (d) 1200
12. 12.118 × 4 =
13. 13.6 + 4 + 1 + 4 =
14. 14.11 + 63 + 72 + 73 =
15. 15.380 + 79 =
16. 16.Best estimate of 101 × 7? (a) 700 (b) 7000 (c) 70 (d) 1400
17. 17.Best estimate of 98 × 7? (a) 1400 (b) 70 (c) 7000 (d) 700
18. 18.270 ÷ 5 =
19. 19.650 ÷ 50 =
20. 20.81 − 38 =
21. 21.13 × 5 =
22. 22.₹38.85 − ₹29.75 =
23. 23.390 + 48 =
24. 24.₹61.90 + ₹9.40 =
25. 25.4 + 6 + 3 + 6 =
26. 26.16 × 18 =
27. 27.9 + 3 + 1 + 6 =
28. 28.10% of 70 =
29. 29.Best estimate of 899 × 6? (a) 5400 (b) 540 (c) 10800 (d) 54000
30. 30.Best estimate of 92 × 72? (a) 6300 (b) 630 (c) 12600 (d) 63000
31. 31.233 − 86 =
32. 32.61² =
33. 33.86 + 74 + 30 + 80 =
34. 34.81² =
35. 35.41² =
36. 36.Best estimate of 597 × 4? (a) 4800 (b) 2400 (c) 240 (d) 24000
37. 37.Best estimate of 48 × 62? (a) 3000 (b) 6000 (c) 30000 (d) 300
38. 38.446 − 26 =
39. 39.43 × 15 =
40. 40.39² =

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