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下列各题，你认为怎样算简便就怎样算．1.25×6.9×899×0.79+0.79536÷[（12-16）×59]．
题目详情
下列各题，你认为怎样算简便就怎样算．
1.25×6.9×8
99×0.79+0.79
÷[（
-
）×
]．
÷[（
-
）×
]．
5 5 36 36
-
）×
]．
1 1 2 2
）×
]．
1 1 6 6
]．
5 5 9 9
1.25×6.9×8
99×0.79+0.79
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▼优质解答
答案和解析
①1.25×6.9×8
=1.25×8×6.9
=10×6.9
=69
②99×0.79+0.79
=（99+1）×0.79
=100×0.79
=79
③
÷[（
-
）×
]
=
÷（
×
）
=
÷
=
×
=
5 5 536 36 36÷[（
-
）×
]
=
÷（
×
）
=
÷
=
×
=
1 1 12 2 2-
）×
]
=
÷（
×
）
=
÷
=
×
=
1 1 16 6 6）×
]
=
÷（
×
）
=
÷
=
×
=
5 5 59 9 9]
=
÷（
×
）
=
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=
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=
5 5 536 36 36÷（
×
）
=
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=
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=
1 1 13 3 3×
）
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÷
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=
5 5 59 9 9）
=
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5 5 536 36 36÷
=
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=
÷
5 5 527 27 27
=
×
=
5 5 536 36 36×
=
27 27 275 5 5
=
3 3 34 4 4
=1.25×8×6.9
=10×6.9
=69
②99×0.79+0.79
=（99+1）×0.79
=100×0.79
=79
③
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