Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 980 · 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.₹80.70 − ₹43.85 =
2. 2.Best estimate of 62 × 71? (a) 4200 (b) 42000 (c) 8400 (d) 420
3. 3.₹33.85 − ₹17.80 =
4. 4.Best estimate of 22 × 91? (a) 1800 (b) 180 (c) 3600 (d) 18000
5. 5.13 × 13 =
6. 6.₹39.80 + ₹17.80 =
7. 7.49² =
8. 8.Check with nines: 87 × 36 = 3140. Correct or wrong? (a) correct (b) wrong
9. 9.69² =
10. 10.14 × 11 =
11. 11.305 − 26 =
12. 12.54 × 5 =
13. 13.54 + 77 + 11 + 19 =
14. 14.Best estimate of 901 × 3? (a) 5400 (b) 270 (c) 27000 (d) 2700
15. 15.201 − 86 =
16. 16.Check with nines: 231 + 169 = 400. Correct or wrong? (a) wrong (b) correct
17. 17.315 + 99 =
18. 18.Check with nines: 23 × 31 = 713. Correct or wrong? (a) wrong (b) correct
19. 19.845 ÷ 5 =
20. 20.₹18.90 + ₹42.50 =
21. 21.391 − 37 =
22. 22.26 × 15 =
23. 23.101 − 77 =
24. 24.₹87.35 − ₹17.30 =
25. 25.5% of 200 =
26. 26.8 + 4 + 6 + 7 + 1 =
27. 27.10% of 870 =
28. 28.8 + 8 + 5 + 2 + 3 =
29. 29.₹28.60 − ₹13.40 =
30. 30.109 + 48 =
31. 31.5 × 15 =
32. 32.14 + 32 + 62 + 59 =
33. 33.Best estimate of 59 × 89? (a) 540 (b) 54000 (c) 10800 (d) 5400
34. 34.485 ÷ 5 =
35. 35.85 × 4 =
36. 36.25 × 5 =
37. 37.15 × 12 =
38. 38.₹14.10 + ₹11.90 =
39. 39.8 + 7 + 3 + 9 + 7 =
40. 40.955 ÷ 5 =

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