(78.6-0.786×25十75%×21.4)÷15×2011=______.
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/11/08 17:07:20
(78.6-0.786×25十75%×21.4)÷15×2011=______.
(78.6-0.786×25十75%×21.4)÷15×2011
=(78.6-78.6×0.25+75%×21.4)÷15×2011,
=[(1-0.25)×78.6+0.75×21.4]÷15×2011,
=[0.75×78.6×0.75×21.4]÷15×2011,
=(78.6+21.4)×0.75÷15×2011,
=100×0.75÷15×2011,
=75÷15×2011,
=5×2011,
=10055.
故答案为:10055.
=(78.6-78.6×0.25+75%×21.4)÷15×2011,
=[(1-0.25)×78.6+0.75×21.4]÷15×2011,
=[0.75×78.6×0.75×21.4]÷15×2011,
=(78.6+21.4)×0.75÷15×2011,
=100×0.75÷15×2011,
=75÷15×2011,
=5×2011,
=10055.
故答案为:10055.
(78.6-0.786×25十75%×21.4)÷15×2011=______.
1994十199.4十19.94十1.994=______.
(78.6-0.786×25+75%×21.4)÷15×1997=______.
125×32×25=(______×______)×(______×______)
125×(4+8)=______×______+______×______.
猜谜语(打书本中两个几何名称).剩下十分钱______;两牛相斗______.
计数单位之间的进率都是十.______.(判断对错)
个、十、百、千、万…都是数位.______.(判断对错)
小数和整数的计数单位相同,进率都是十.______(判断对错)
根据算式25×3=75,______和______是______的因数;______是______和______的倍数.
3÷______=______÷24=75%=______折.
判断题 846一25十75 =846一(25十75) =846一100 =746