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简便计算
0.25×
16.2×
40.125×
641.25×
3.2×
2512.5×
4.
80.25×
2.6×
0.
42.5×
2043.2×
1250.79×
1990.68×
1011.01×
2.
63.8×
9.
93.6×102
4.8×
100.1
7.69×
1013.26×
5.7-
3.26×
0.
73.42×
5.7+
4.3×
3.
428.75×11-
8.
7555.6×99+
55.
63.72×
3.5+
6.28×
3.
556.5×
9.9+
56.5
7.09×
10.8-
0.8×
7.
0928.6×101-
28.
63.72×
3.5+
6.28×
3.
515.6×
13.1-
15.6-
15.6×
2.146×
0.33+54×
0.
3310.7×
16.1-
15.1×
10.
79.16×
1.5-
0.5×
9.
162.3×16+
2.3×23+
2.
34.8×
7.8+78×
0.
524.8×
7.8+78×
0.
521.25-
0.125×8(125-40)×
0.8(
2.5-
0.25)×
0.
418.76×
9.9+
1.
87656.5×
9.9+
5.
654.8×
7.8+78×
0.
523.14×
0.68+
31.4×
0.032101×
0.87-
0.91×
873.65×
4.7-
36.5×
0.
372.35+
1.713+
0.287+
7.
651.57+
0.245+
7.
436.02+
3.6+
1.
980.134+
2.66+
0.
8661.27+
3.9+
0.73+
16.
17.5+
4.9-
6.
53.25+
1.79-
0.59+
1.
753.07-
0.38-
1.
621.29+
3.7+
2.71+
6.
30.456+
6.22+
3.
7815.89+
6.75-
5.898-
2.45-
1.
556.9+
4.8+
3.
14.02+
5.4+
0.
985.17-
1.8-
3.
213.75-
3.75—
6.
483.68+
7.56-
2.
687.85+
2.34-
0.85+
4.
6635.6-
1.8-
15.6-
7.
29.6+
4.8-
3.
63.82+
2.9+
0.18+
9.
147.8-
7.45+
8.
873.8-
1.64-
13.8-
5.
367.14-
0.53-
2.
475.
27...。