简便运算:4.56-2.87+5.44-3.13 468除以125除以8 3分之2乘28-19除以2分之3

问题描述:

简便运算:4.56-2.87+5.44-3.13 468除以125除以8 3分之2乘28-19除以2分之3

4.56-2.87+5.44-3.13
=4.56+5.44-(2.87+3.13)
=10-6
=4
468÷125÷8
=468÷(125×8)
=468÷1000
=0.468
3分之2乘28-19除以2分之3
=2/3×28-2/3×19
=2/3×(28-19)
=2/3×9
=6