Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 988 · 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. 1.81 − 38 =
2. 2.₹33.80 + ₹42.45 =
3. 3.263 + 69 =
4. 4.7 + 2 + 3 + 4 + 7 =
5. 5.221 − 59 =
6. 6.39 + 28 =
7. 7.525 ÷ 5 =
8. 8.145 − 86 =
9. 9.60 × 15 =
10. 10.9 + 8 + 5 + 5 =
11. 11.165 + 99 =
12. 12.1350 ÷ 25 =
13. 13.3 + 9 + 1 + 9 =
14. 14.₹45.25 + ₹9.95 =
15. 15.Check with nines: 17 × 89 = 1513. Correct or wrong? (a) wrong (b) correct
16. 16.Check with nines: 764 + 140 = 898. Correct or wrong? (a) correct (b) wrong
17. 17.5 × 15 =
18. 18.₹38.15 + ₹38.85 =
19. 19.53 × 4 =
20. 20.6 + 3 + 9 + 6 + 7 =
21. 21.549 − 76 =
22. 22.Check with nines: 95 × 76 = 7226. Correct or wrong? (a) wrong (b) correct
23. 23.290 + 19 =
24. 24.51² =
25. 25.Check with nines: 310 + 128 = 438. Correct or wrong? (a) correct (b) wrong
26. 26.331 + 27 =
27. 27.12 × 19 =
28. 28.₹48.50 + ₹5.15 =
29. 29.71² =
30. 30.Best estimate of 501 × 6? (a) 30000 (b) 6000 (c) 300 (d) 3000
31. 31.₹59.40 + ₹5.70 =
32. 32.6 + 3 + 9 + 7 + 1 =
33. 33.₹25.40 − ₹12.50 =
34. 34.2 + 9 + 5 + 3 + 5 =
35. 35.41 × 5 =
36. 36.Check with nines: 20 × 39 = 780. Correct or wrong? (a) correct (b) wrong
37. 37.11 + 28 + 52 + 23 =
38. 38.125 ÷ 5 =
39. 39.62 × 15 =
40. 40.5 + 3 + 9 + 1 =

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