23.4-8.54-1.46的简便计算
计算下面各题,怎样简便就怎样算.(1)23.4-8.54-1.46 ...
计算下面各题,怎样简便就怎样算.
(1)23.4-8.54-1.46
(2)19×96+962÷74
(3)400-(1300÷65+35)
(4)29×36-36×9
(5)72×125
(6)(80+360÷24)×9. 展开
(1)23.4-8.54-1.46
(2)19×96+962÷74
(3)400-(1300÷65+35)
(4)29×36-36×9
(5)72×125
(6)(80+360÷24)×9. 展开
1个回答
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(1)23.4-8.54-1.46
=23.4-(8.54+1.46)
=23.4-10
=13.4;
(2)19×96+962÷74
=1824+13
=1837;
(3)400-(1300÷65+35)
=400-(20+35)
=400-55
=345;
(4)29×36-36×9
=(29-9)×36
=20×36
=720;
(5)72×125
=(9×8)×125
=9×(8×125)
=9×1000
=9000;
(6)(80+360÷24)×9
=(80+15)×9
=95×9
=855.
=23.4-(8.54+1.46)
=23.4-10
=13.4;
(2)19×96+962÷74
=1824+13
=1837;
(3)400-(1300÷65+35)
=400-(20+35)
=400-55
=345;
(4)29×36-36×9
=(29-9)×36
=20×36
=720;
(5)72×125
=(9×8)×125
=9×(8×125)
=9×1000
=9000;
(6)(80+360÷24)×9
=(80+15)×9
=95×9
=855.
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