-0.6+1.8-5.4+4.2
4个回答

-0.6+1.8-5.4+4.2

=-0.6-5.4+1.8+4.2

=-(0.6+5.4)+(1.8+4.2)

=-6+6

=0

-11分之6-9分之7+9分之4-11分之5

=-11分之6-11分之5-9分之7+9分之4

=-(1分之6+11分之5)-(9分之7-9分之4)

=-1-3/9

=1又1/3

-0.8-(-0.08)-(-8)-(-0.92)-(-9)

=-0.8+0.08+8+0.92+9

=+0.08+0.92+8+9-0.8

=17.2

-|-0.25|+4分之3-(-0.125)+|-0.75|

=-0.25+4分之3+0.125+0.75

=1.375