Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 93 · 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. 1.300 ÷ 50 =
2. 2.₹38.10 − ₹17.15 =
3. 3.28 × 4 =
4. 4.875 ÷ 25 =
5. 5.Check with nines: 839 + 808 = 1646. Correct or wrong? (a) wrong (b) correct
6. 6.1900 ÷ 50 =
7. 7.Best estimate of 39 × 58? (a) 240 (b) 24000 (c) 4800 (d) 2400
8. 8.₹87.45 − ₹29.15 =
9. 9.83 + 67 + 25 + 36 =
10. 10.8 + 6 + 8 + 2 =
11. 11.Best estimate of 28 × 32? (a) 9000 (b) 1800 (c) 90 (d) 900
12. 12.85 × 5 =
13. 13.82 − 37 =
14. 14.106 × 4 =
15. 15.13 × 11 =
16. 16.2 + 1 + 8 + 2 + 7 =
17. 17.775 ÷ 25 =
18. 18.9 + 1 + 3 + 4 + 1 =
19. 19.14 + 55 + 59 + 71 =
20. 20.6 + 4 + 9 + 6 =
21. 21.42 × 15 =
22. 22.Check with nines: 60 × 77 = 4626. Correct or wrong? (a) correct (b) wrong
23. 23.27 × 15 =
24. 24.168 + 59 =
25. 25.209 + 47 =
26. 26.5 × 15 =
27. 27.89² =
28. 28.₹42.40 − ₹38.50 =
29. 29.572 − 29 =
30. 30.Best estimate of 698 × 5? (a) 7000 (b) 350 (c) 3500 (d) 35000
31. 31.362 − 86 =
32. 32.Check with nines: 39 × 80 = 3120. Correct or wrong? (a) correct (b) wrong
33. 33.168 − 79 =
34. 34.₹70.15 + ₹4.65 =
35. 35.2 + 5 + 2 + 8 =
36. 36.560 ÷ 5 =
37. 37.179 − 79 =
38. 38.230 − 48 =
39. 39.₹38.55 + ₹7.20 =
40. 40.35 + 32 + 21 + 70 =

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