42.4+7.6= 0.3÷10= 0÷4.8= 77÷7.7= 53.73-13= 3.6÷9= 200×0.04= 1.58+2.42= 7.8-5.6= 1.25×4= 0.24÷0.3= 8.76+0.1= 2÷0.4= 3.5×0.1= 7.8×0.5= 3.9+2.7= 1.25×8= 12-3.8= 0.24÷3= 4.5×0.1= 0.13×7= 8.1-0.05=