Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 460 · 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. 1.89 × 5 =
2. 2.350 ÷ 50 =
3. 3.13 × 12 =
4. 4.77 + 18 + 25 + 51 =
5. 5.86 + 76 + 13 + 81 =
6. 6.12 × 14 =
7. 7.45 + 49 + 66 + 34 =
8. 8.₹48.90 − ₹36.35 =
9. 9.42 × 5 =
10. 10.Check with nines: 81 × 88 = 7128. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 31 × 29 = 901. Correct or wrong? (a) wrong (b) correct
12. 12.356 − 17 =
13. 13.14 × 18 =
14. 14.273 − 48 =
15. 15.85 × 5 =
16. 16.₹10.45 + ₹25.85 =
17. 17.₹37.35 − ₹24.80 =
18. 18.67 + 27 =
19. 19.Check with nines: 34 × 44 = 1496. Correct or wrong? (a) correct (b) wrong
20. 20.1% of 390 =
21. 21.₹31.95 − ₹7.20 =
22. 22.25% of 100 =
23. 23.₹67.05 − ₹35.15 =
24. 24.60 × 8 =
25. 25.16 × 50 =
26. 26.11 + 42 + 56 + 63 =
27. 27.134 × 4 =
28. 28.60 × 15 =
29. 29.53 × 8 =
30. 30.219 − 28 =
31. 31.4 + 7 + 1 + 3 + 1 =
32. 32.3 + 4 + 1 + 5 + 6 =
33. 33.78 × 5 =
34. 34.500 ÷ 50 =
35. 35.37 + 27 + 50 + 33 =
36. 36.Best estimate of 28 × 72? (a) 21000 (b) 210 (c) 2100 (d) 4200
37. 37.5% of 330 =
38. 38.755 ÷ 5 =
39. 39.Best estimate of 72 × 28? (a) 21000 (b) 4200 (c) 2100 (d) 210
40. 40.Best estimate of 49 × 88? (a) 4500 (b) 45000 (c) 450 (d) 9000

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