5
$0.36 - 0.26 =$ $3 + 1.2 + 3.5 =$ $10 - 9.9 =$
$3.6 + 2.8 =$ $8.5 - (6.5 - 0.3) =$ $32.46 + 7.2 =$
$0.7 + 3 =$ $4.15 + 3.46 + 4 =$ $7.5 - 2.9 =$
$4.8 - 4.5 =$ $2.8 + 3.1 - 1.3 =$ $45 - 38.2 =$
$3.8 - 0.3 =$ $8.6 - (1.9 + 4) =$ $9.6 - (0.3 + 4.4) =$
$4.8 + 5.36 =$ $8.8 - 7.19 - 0.5 =$ $6.67 + 0.23 - 3.4 =$
$1.11 - 0.4 =$ $0.28 + 0.42 + 9.6 =$ $240 + 24.6 =$
$9.3 - 3.3 =$ $16.3 - 0.3 - 3.3 =$ $21.86 - 21.06 =$
$12.8 + 8.2 =$ $7.25 + 0.75 + 3.5 =$ $2 - 0.6 + 3.2 =$
$5.65 - 3.8 =$ $4 - 2.8 + 3.5 =$ $6.65 + 4.35 - 3.4 =$
$80 - 12.3 =$ $3.5 + 4.5 - 3.4 =$ $3.65 + 10.35 - 3 =$
$2.4 + 3.23 =$ $9 - (4.4 - 3.2) =$ $45.13 - 5.13 + 4.3 =$
$3.4 - 1.32 =$ $5.3 + 3.5 + 3.5 =$ $0.8 + 0.2 - 0.4 =$
时间()
评价

1. $0.36 - 0.26 = 0.1$
2. $3 + 1.2 + 3.5 = 7.7$
3. $10 - 9.9 = 0.1$
4. $3.6 + 2.8 = 6.4$
5. $8.5 - (6.5 - 0.3) =2.3$
6. $32.46 + 7.2 = 39.66$
7. $0.7 + 3 = 3.7$
8. $4.15 + 3.46 + 4 = 11.61$
9. $7.5 - 2.9 = 4.6$
10. $4.8 - 4.5 = 0.3$
11. $2.8 + 3.1 - 1.3 = 4.6$
12. $45 - 38.2 = 6.8$
13. $3.8 - 0.3 = 3.5$
14. $8.6 - (1.9 + 4) = 2.7$
15. $9.6 - (0.3 + 4.4) = 4.9$
16. $4.8 + 5.36 = 10.16$
17. $8.8 - 7.19 - 0.5 = 1.11$
18. $6.67 + 0.23 - 3.4 = 3.5$
19. $1.11 - 0.4 = 0.71$
20. $0.28 + 0.42 + 9.6 = 10.3$
21. $240 + 24.6 = 264.6$
22. $9.3 - 3.3 = 6$
23. $16.3 - 0.3 - 3.3 = 12.7$
24. $21.86 - 21.06 = 0.8$
25. $12.8 + 8.2 = 21$
26. $7.25 + 0.75 + 3.5 = 11.5$
27. $2 - 0.6 + 3.2 = 4.6$
28. $5.65 - 3.8 = 1.85$
29. $4 - 2.8 + 3.5 = 4.7$
30. $6.65 + 4.35 - 3.4 = 7.6$
31. $80 - 12.3 = 67.7$
32. $3.5 + 4.5 - 3.4 = 4.6$
33. $3.65 + 10.35 - 3 = 11$
34. $2.4 + 3.23 = 5.63$
35. $9 - (4.4 - 3.2) = 7.8$
36. $45.13 - 5.13 + 4.3 = 44.3$
37. $3.4 - 1.32 = 2.08$
38. $5.3 + 3.5 + 3.5 = 12.3$
39. $0.8 + 0.2 - 0.4 = 0.6$