0.79x2.5+7.9x0.75简便计算.

2025-04-15 06:46:49
推荐回答(4个)
回答(1):

=0.79×2.5+0.79×7.5
=0.79×(2.5+7.5)
=0.79×10
=7.9
注:7.9÷10×0.75×10

回答(2):

7.9✘0.25+7.9✘0.75
=7.9x(0.25+0.75)
=7.9

回答(3):

 

回答(4):

0.79×2.5+7.9×0.75
=7.9×(0.25+0.75)
=7.9×1
=7.9