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问题: 50道加减混合计算题~~急啊,作业要求的

只要50道任意的加减混合计算题,一定要加减的!!!

解答:

1.(374+55)+(253+25)+(347+526)
2.773-297+197
3.678+104-56
4.678+999+58
5.678-134+33
6.678-197+99
7.945-537-98+237
8.19+199+1999+19999
9.77+64+75-73
10.(2542+2543-2538)-2
11.56+22+44
12.67+(18+133)
13.728+34+76+272
14.327+466+(534+173)
15.585+(267+415)+733
16.874-(674+22)
17.571-36-64
18.672-(412+243)
19.7896-(1234+5896)
20.426+109-5
21.5678-4987+632
22.197+389-45
23.487+168-56
24.49+499-250
25.667+458-345
26.27+33+30-31
27.56+45-23
28.774+776-24
29.843+(365-243)
30.147+26+53-39
31.800-89+40
32.2784+4253-784
33.1668+65-24
34.9999+54-89
35.43+173-35
36.4123+3412-2341
37.8247-(247+159)
38.54+48-51
39.562+781-264
40.3+6-2
41.32-14+67
42.33+44-55
43.529+341-581
44.61+35-25
45.23-12+68
46.52+63-49
47.37+29-48
48.63-54+68
49.55-14+62
50.32+49-57