21.5除以中括号小括号6.07+2.53括起来乘0.5中括号等于20

2025-02-25 17:26:36
推荐回答(1个)
回答1:

(1)21.5÷(6.07+2.53)
=21.5÷8.6
=2.5
(2)9.6÷0.16÷0.3
=60÷0.3
=200
(3)[20-(90.75÷66+2.2)]×0.6
=[20-(1.375+2.2)]×0.6
=[20-3.575]×0.6
=16.425×0.6
=9.855
(4)0.98×100.1
=0.98×(100+0.1)
=0.98×100+0.98×0.1
=98+0.098
=98.098