Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 827 · 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. 1.334 − 16 =
2. 2.₹21.45 − ₹5.10 =
3. 3.44 × 15 =
4. 4.1100 ÷ 50 =
5. 5.440 + 27 =
6. 6.321 − 88 =
7. 7.₹41.70 + ₹33.60 =
8. 8.255 − 89 =
9. 9.Check with nines: 82 × 26 = 2132. Correct or wrong? (a) correct (b) wrong
10. 10.₹55.80 − ₹8.35 =
11. 11.51 + 68 =
12. 12.130 + 97 =
13. 13.₹26.55 − ₹17.95 =
14. 14.20% of 90 =
15. 15.346 + 57 =
16. 16.47 × 15 =
17. 17.37 × 15 =
18. 18.8 × 15 =
19. 19.800 ÷ 50 =
20. 20.₹29.45 + ₹37.35 =
21. 21.61² =
22. 22.Check with nines: 602 + 177 = 779. Correct or wrong? (a) correct (b) wrong
23. 23.9 + 1 + 9 + 4 + 1 =
24. 24.52 + 75 + 17 + 22 =
25. 25.9 + 3 + 1 + 2 + 7 =
26. 26.Best estimate of 602 × 4? (a) 240 (b) 24000 (c) 4800 (d) 2400
27. 27.13 × 8 =
28. 28.₹37.60 + ₹2.55 =
29. 29.1% of 140 =
30. 30.31² =
31. 31.19² =
32. 32.680 ÷ 5 =
33. 33.675 ÷ 25 =
34. 34.16 × 12 =
35. 35.650 ÷ 50 =
36. 36.Check with nines: 24 × 26 = 618. Correct or wrong? (a) correct (b) wrong
37. 37.14 × 8 =
38. 38.Best estimate of 42 × 72? (a) 5600 (b) 2800 (c) 28000 (d) 280
39. 39.Check with nines: 26 × 50 = 1300. Correct or wrong? (a) wrong (b) correct
40. 40.36 + 68 + 62 + 17 =

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