(845-15ⅹ3)÷1612ⅹ[(49-28)÷7]
(45+38-16)×24500-(240+38×6)(845-15×3)÷1612×[(49-28)÷7]....
(45+38-16)×24
500-(240+38×6)
(845-15×3)÷16
12×[(49-28)÷7]. 展开
500-(240+38×6)
(845-15×3)÷16
12×[(49-28)÷7]. 展开
1个回答
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(1)(45+38-16)×24
=(83-16)×24
=67×24
=1608;
(2)500-(240+38×6)
=500-(240+228)
=500-468
=32;
(3)(845-15×3)÷16
=(845-45)÷16
=800÷16
=50;
(4)12×[(49-28)÷7]
=12×[21÷7]
=12×3
=36.
=(83-16)×24
=67×24
=1608;
(2)500-(240+38×6)
=500-(240+228)
=500-468
=32;
(3)(845-15×3)÷16
=(845-45)÷16
=800÷16
=50;
(4)12×[(49-28)÷7]
=12×[21÷7]
=12×3
=36.
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