0.01+10.099=    4.31×0.7=    7.5- 2.5=    5.4+1.89+4.6=

0.56+4.44=    2.9+3.7+2.1=    4×0.25=    1.25×5×8=

7.6×8+2.4×8=    7.2÷4 =