0.7777乘0.7+0.1111乘2.1简便计算 要用算式,不能搞什么*什么的

2024-11-19 18:46:37
推荐回答(3个)
回答1:

0.7777×0.7 0.1111x7x0.3
= 0.7777x(0.7 0.3)=0.7777

回答2:

0.7777*0.7=0.1111*4.9

算式等于0.1111*(4.9+2.1)=0.1111*7=0.7777

(78.6-0.786乘25+0.75乘21.4)除以15乘2001
=(0.786*(100-25)+0.75*21.4)/15*2001
=(78.6*0.75+0.75*21.4)/15*2001
=100*0.75/15*2001
=5*2001
=10005

回答3:

0.7777*0.7+0.1111*2.1
=0.1111*0.7*(7+3)
=0.1111*0.7*10
=0.1111*7
=0.7777