脱式计算。
• (65−63)×8 •15÷5+89 •63+59−28 •257+478−26
• (54−27)÷9 •31−35÷5 •6×(68−61) •836−57+35
•1×(53−50) •3×(63−57) •9×(30−23) •158+75−142
•8×6−10 •63÷9−3 •10+8×5 •907−(25+326)
•7×9+17 •32÷4×5 •28−3×4 •136+(65−41)
•7×8−23 •8×(54−49) •48÷8+13 •749+16−22
•14÷7+10 •(51−45)÷2 •709−95+60 •107+57−14
•72÷9+52 •5×(64−62) •459+39−76 •697−69+86
•25−4×5 •(32−26)÷3 •12÷3×6 •125−(47+22)
•9×7−23 •6÷2×4 •114+88−175 •725−(14+28)

1. (65−63)×8
=2×8
=16
2. 15÷5+89
=3+89
=92
3. 63+59−28
=122−28
=94
4. 257+478−26
=735−26
=709
5. (54−27)÷9
=27÷9
=3
6. 31−35÷5
=31−7
=24
7. 6×(68−61)
=6×7
=42
8. 836−57+35
=779+35
=814
9. 1×(53−50)
=1×3
=3
10. 3×(63−57)
=3×6
=18
11. 9×(30−23)
=9×7
=63
12. 158+75−142
=233−142
=91
13. 8×6−10
=48−10
=38
14. 63÷9−3
=7−3
=4
15. 10+8×5
=10+40
=50
16. 907−(25+326)
=907−351
=556
17. 7×9+17
=63+17
=80
18. 32÷4×5
=8×5
=40
19. 28−3×4
=28−12
=16
20. 136+(65−41)
=136+24
=160
21. 7×8−23
=56−23
=33
22. 8×(54−49)
=8×5
=40
23. 48÷8+13
=6+13
=19
24. 749+16−22
=765−22
=743
25. 14÷7+10
=2+10
=12
26. (51−45)÷2
=6÷2
=3
27. 709−95+60
=614+60
=674
28. 107+57−14
=164−14
=150
29. 72÷9+52
=8+52
=60
30. 5×(64−62)
=5×2
=10
31. 459+39−76
=498−76
=422
32. 697−69+86
=628+86
=714
33. 25−4×5
=25−20
=5
34. (32−26)÷3
=6÷3
=2
35. 12÷3×6
=4×6
=24
36. 125−(47+22)
=125−69
=56
37. 9×7−23
=63−23
=40
38. 6÷2×4
=3×4
=12
39. 114+88−175
=202−175
=27
40. 725−(14+28)
=725−42
=683