1.25乘以320乘以25简便计算 6.89乘以101减6.89简便计算 16乘以0.25乘以1.25简便计算
问题描述:
1.25乘以320乘以25简便计算 6.89乘以101减6.89简便计算 16乘以0.25乘以1.25简便计算
答
1.25×320×25
=1.25×80×4×25
=100×100
=10000
6.89×101-6.89
=6.89×(101-1)
=6.89×100
=689
16×0.25×1.25
=8×1.25×(2×0.25)
=10×0.5
=533x1.03简便计算(1.25+1.25+1.25)x5+8.75x15简便计算33×1.03=33×(1+0.03)=33×1+33×0.03=33+0.99=33.99(1.25+1.25+1.25)×5+8.75×15=1.25×3×5+8.75×15=(1.25+8.75)×15=10×15=150