Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 574 · 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.Check with nines: 86 × 63 = 5415. Correct or wrong? (a) wrong (b) correct
2. 2.47 × 15 =
3. 3.305 ÷ 5 =
4. 4.38 × 50 =
5. 5.25 × 15 =
6. 6.294 − 79 =
7. 7.6 + 7 + 4 + 2 + 4 =
8. 8.484 − 58 =
9. 9.71² =
10. 10.Best estimate of 52 × 71? (a) 3500 (b) 7000 (c) 350 (d) 35000
11. 11.Best estimate of 88 × 49? (a) 45000 (b) 9000 (c) 450 (d) 4500
12. 12.₹67.90 + ₹24.40 =
13. 13.340 − 48 =
14. 14.₹28.40 − ₹5.45 =
15. 15.5% of 640 =
16. 16.19² =
17. 17.14 × 15 =
18. 18.254 − 19 =
19. 19.22 × 5 =
20. 20.Best estimate of 201 × 4? (a) 8000 (b) 1600 (c) 800 (d) 80
21. 21.3 + 5 + 5 + 9 + 1 =
22. 22.126 × 4 =
23. 23.Check with nines: 29 × 96 = 2784. Correct or wrong? (a) wrong (b) correct
24. 24.429 − 98 =
25. 25.59² =
26. 26.130 + 99 =
27. 27.41 × 5 =
28. 28.423 + 68 =
29. 29.₹33.65 − ₹14.60 =
30. 30.19² =
31. 31.₹38.90 − ₹14.70 =
32. 32.9 + 1 + 3 + 1 + 2 =
33. 33.1125 ÷ 25 =
34. 34.110 + 89 =
35. 35.Check with nines: 60 × 68 = 4085. Correct or wrong? (a) wrong (b) correct
36. 36.40 × 4 =
37. 37.15 + 63 + 32 + 50 =
38. 38.50 + 18 + 74 + 13 =
39. 39.265 ÷ 5 =
40. 40.21 × 8 =

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