Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 467 · 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. 1.246 + 27 =
2. 2.20 × 8 =
3. 3.21 × 5 =
4. 4.134 + 49 =
5. 5.46 × 15 =
6. 6.₹60.80 − ₹34.90 =
7. 7.44 × 15 =
8. 8.₹25.85 + ₹43.75 =
9. 9.47 + 20 + 29 + 29 =
10. 10.70 + 49 =
11. 11.89² =
12. 12.190 + 87 =
13. 13.Check with nines: 79 × 66 = 5214. Correct or wrong? (a) wrong (b) correct
14. 14.39 × 5 =
15. 15.56 + 56 + 32 + 14 =
16. 16.Check with nines: 88 × 67 = 5897. Correct or wrong? (a) correct (b) wrong
17. 17.75 + 12 + 34 + 49 =
18. 18.₹17.90 + ₹39.30 =
19. 19.412 − 48 =
20. 20.9 + 1 + 7 + 3 =
21. 21.Best estimate of 503 × 5? (a) 2500 (b) 5000 (c) 25000 (d) 250
22. 22.Best estimate of 68 × 19? (a) 1400 (b) 2800 (c) 14000 (d) 140
23. 23.76 + 28 + 12 + 14 =
24. 24.13 × 19 =
25. 25.69² =
26. 26.14 + 11 + 21 + 32 =
27. 27.1 + 3 + 6 + 7 =
28. 28.14 × 11 =
29. 29.5 + 6 + 4 + 6 =
30. 30.₹47.30 − ₹18.20 =
31. 31.218 + 27 =
32. 32.84 + 74 + 53 + 42 =
33. 33.1 + 9 + 1 + 6 + 1 =
34. 34.Best estimate of 88 × 42? (a) 36000 (b) 3600 (c) 7200 (d) 360
35. 35.444 + 27 =
36. 36.₹37.20 + ₹2.80 =
37. 37.51 + 81 + 87 + 48 =
38. 38.95 ÷ 5 =
39. 39.7 + 8 + 1 + 3 =
40. 40.Best estimate of 51 × 79? (a) 40000 (b) 8000 (c) 4000 (d) 400

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