名校小升初真题的简单计算

=(50-1/8)*(-4)

=-200+1/2

=-199.5

1/5*(-75 5/6)

=1/5*(-75-5/6)

=-25-1/6

=-25和1/6

(-9 24/25)*(-125)

=(-10+1/25)*(-125))

=1250-5

=1245