Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 528 · 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. 1.47 + 38 =
2. 2.2 + 2 + 4 + 9 + 8 =
3. 3.600 ÷ 50 =
4. 4.50% of 740 =
5. 5.87 + 34 + 32 + 27 =
6. 6.8 + 2 + 8 + 3 + 1 =
7. 7.1900 ÷ 50 =
8. 8.5% of 20 =
9. 9.Check with nines: 98 × 56 = 5488. Correct or wrong? (a) correct (b) wrong
10. 10.64 × 4 =
11. 11.15 × 11 =
12. 12.124 × 4 =
13. 13.92 + 77 =
14. 14.16 × 14 =
15. 15.2 + 2 + 1 + 9 =
16. 16.₹91.30 + ₹8.55 =
17. 17.271 + 19 =
18. 18.5 + 5 + 1 + 9 =
19. 19.524 − 46 =
20. 20.37 + 71 + 40 + 49 =
21. 21.362 + 58 =
22. 22.72 + 48 =
23. 23.Best estimate of 89 × 38? (a) 36000 (b) 3600 (c) 360 (d) 7200
24. 24.Check with nines: 29 × 53 = 1537. Correct or wrong? (a) wrong (b) correct
25. 25.16 + 83 + 31 + 58 =
26. 26.6 + 8 + 4 + 1 =
27. 27.71² =
28. 28.35 + 71 + 63 + 35 =
29. 29.539 − 69 =
30. 30.74 × 50 =
31. 31.94 × 50 =
32. 32.25 × 5 =
33. 33.Check with nines: 229 + 586 = 815. Correct or wrong? (a) correct (b) wrong
34. 34.₹75.30 − ₹41.40 =
35. 35.Check with nines: 45 × 55 = 2475. Correct or wrong? (a) wrong (b) correct
36. 36.Best estimate of 29 × 91? (a) 270 (b) 27000 (c) 2700 (d) 5400
37. 37.150 + 47 =
38. 38.32 + 35 + 43 + 51 =
39. 39.10% of 900 =
40. 40.486 + 38 =

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