回答如下:1. 45 + 27 - 13 = 59
2. 68 - 23 + 15 = 60
3. 96 - 12 - 23 = 61
4. 85 + 27 - 49 = 63
5. 64 - 27 + 18 = 55
6. 92 - 35 + 14 = 71
7. 78 + 24 - 39 = 63
8. 56 - 15 + 27 = 68
9. 74 - 29 - 17 = 28
10. 83 + 18 - 39 = 62
11. 47 - 18 + 24 = 53
12. 69 + 15 - 27 = 57
13. 52 - 19 + 27 = 60
14. 63 + 21 - 38 = 46
15. 87 - 36 + 14 = 65
16. 76 - 29 - 17 = 30
17. 91 + 15 - 38 = 68
18. 58 - 17 + 23 = 64
19. 72 + 27 - 45 = 54
20. 85 - 18 + 37 = 104
1)、26×4-25÷(125÷25)=99
(2)、13+7×2-8=19
(3)、24×5-6=114
(4)、(37-9)÷7=4
(5)、26×4=104
(6)、63-7+8÷4=58
(7)16×2÷4+3=11
(8)91+9×100=991
(9)41×7÷2=143.5
(10)88-12+12×2=100
(11)78×50-1440÷12 = 3780
(12)3856÷16+85×16 = 1601
(13)4000÷(16+832÷13)= 50
(14)(326+95×25)÷37= 73
(15)(7236÷18-228)×28=4872
(16)(4275-24×75)÷25=99
(17)45+15×6= 135
(18)6×5÷2×4=60
(19)30×3+8= 98
(20)400÷4+20= 120