怎么简便怎么算.690
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怎么简便怎么算
(1)690-630÷6×5
=690-105×5
=690-525
=165;
(2)63100×101
=63100×(100+1)
=63100×100+63100×1
=6363100;
(3)14.32-7.8+1.68-3.2
=14.32+1.68-(7.8+3.2)
=16-11
=5;
(4)36×(112+56-34)
=36×112+36×56-36×34
=3+30-27
=6;
(5)(30-24.6÷1.2)÷0.01
=(30-20.5)÷0.01
=9.5÷0.01
=950;
(6)32×152+8÷215
=32×152+8×152
=(32+8)×152
=40×152
=300.
(1)690-630÷6×5
=690-105×5
=690-525
=165;
(2)63100×101
=63100×(100+1)
=63100×100+63100×1
=6363100;
(3)14.32-7.8+1.68-3.2
=14.32+1.68-(7.8+3.2)
=16-11
=5;
(4)36×(112+56-34)
=36×112+36×56-36×34
=3+30-27
=6;
(5)(30-24.6÷1.2)÷0.01
=(30-20.5)÷0.01
=9.5÷0.01
=950;
(6)32×152+8÷215
=32×152+8×152
=(32+8)×152
=40×152
=300.
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