Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 887 · 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. 1.200 ÷ 50 =
2. 2.22 × 50 =
3. 3.3 + 7 + 1 + 6 + 1 =
4. 4.65 + 19 =
5. 5.6 + 5 + 1 + 5 + 5 =
6. 6.Check with nines: 57 × 81 = 4624. Correct or wrong? (a) correct (b) wrong
7. 7.Check with nines: 461 + 942 = 1403. Correct or wrong? (a) wrong (b) correct
8. 8.309 − 26 =
9. 9.Best estimate of 21 × 29? (a) 600 (b) 6000 (c) 1200 (d) 60
10. 10.79² =
11. 11.4 + 1 + 1 + 9 =
12. 12.51 + 21 + 33 + 62 =
13. 13.84 + 38 =
14. 14.24 + 72 + 33 + 85 =
15. 15.7 + 1 + 1 + 3 + 7 =
16. 16.Check with nines: 469 + 420 = 889. Correct or wrong? (a) wrong (b) correct
17. 17.20% of 710 =
18. 18.Check with nines: 203 + 990 = 1185. Correct or wrong? (a) wrong (b) correct
19. 19.715 ÷ 5 =
20. 20.3 + 4 + 7 + 8 + 2 =
21. 21.7 + 4 + 6 + 3 + 6 =
22. 22.25% of 200 =
23. 23.75 × 5 =
24. 24.875 ÷ 25 =
25. 25.43 + 51 + 68 + 71 =
26. 26.Best estimate of 902 × 6? (a) 54000 (b) 540 (c) 5400 (d) 10800
27. 27.19² =
28. 28.276 + 37 =
29. 29.₹56.20 + ₹8.25 =
30. 30.Check with nines: 86 × 14 = 1208. Correct or wrong? (a) correct (b) wrong
31. 31.₹28.80 − ₹2.15 =
32. 32.Check with nines: 97 × 83 = 8051. Correct or wrong? (a) correct (b) wrong
33. 33.1% of 130 =
34. 34.122 + 27 =
35. 35.31 × 15 =
36. 36.Best estimate of 78 × 58? (a) 9600 (b) 480 (c) 48000 (d) 4800
37. 37.72 + 36 + 87 + 74 =
38. 38.288 + 19 =
39. 39.55 × 15 =
40. 40.8 × 15 =

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