2.5×9.76×0.4
12.5×8.8
0.72×101
7.8×9.2+7.8×0.8
2.5×1.3×0.4
50×0.27×0.2
13.2×0.67+13.2×0.33
0.125×9.82×80
1.5×102
0.825×7.2+2.8×0.825
0.25×4.3×0.4
8.2×3.24+8.2×6.76
72×1.01
73.6×0.83+1.7×7.36
3.64+4.83+6.36+5.17
0.25×0.125×0.4×0.8
40.6-9.18-10.82
5.65×1.7+5.65×8.3
15.39-0.48-0.52
32.4+8.52+17.6
思考题：
16.5÷3+0.55×90
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