计算(能简算的要简算)99×8.4+0.84(37.62+20.76)÷0.0424.8×6.2÷12.43.75÷[0.03×(1.34-0.84)].
除法
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| 计算(能简算的要简算) 99×8.4+0.84 (37.62+20.76)÷0.042 4.8×6.2÷12.4 3.75÷[0.03×(1.34-0.84)]. |
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(1)99×8.4+0.84
=990×0.84+0.84×1,
=(990+1)×0.84,
=991×0.84,
=832.44;(2)(37.62+20.76)÷0.042
=58.38÷0.042,
=843÷0.6,
=1390;(3)4.8×6.2÷12.4
=29.76÷12.4,
=2.4;(4)3.75÷[0.03×(1.34-0.84)]
=3.75÷[0.03×0.5],
=3.75÷0.015,
=250.
