计算下面各题.27×12-286÷13 (53.76-17.49)÷1.8 (
计算下面各题.27×12-286÷13(53.76-17.49)÷1.8(339-67)×15÷244000÷125÷815.73-(2.17+0.73)-1.83....
计算下面各题.27×12-286÷13 (53.76-17.49)÷1.8 (339-67)×15÷24 4000÷125÷8 15.73-(2.17+0.73)-1.83.
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(1)27×12-286÷13
=324-22
=302;
(2)(53.76-17.49)÷1.8
=36.27÷1.8
=20.15;
(3)(339-67)×15÷24
=272×15÷24
=4080÷24
=170;
(4)4000÷125÷8
=4000÷(125×8)
=4000÷1000
=4;
(5)15.73-(2.17+0.73)-1.83
=15.73-2.17-0.73-1.83
=(15.73-0.73)-(2.17+1.83)
=15-4
=11.
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