________________
78÷3= 51÷6= 67÷8= 300÷60=
560÷7= 720÷80= 26÷5= 74÷8=
630÷9= 27÷3÷3= 54÷6×8= 28÷4-7=
27+68= 341﹣103= 270÷18= -=
2÷= 0.42×0.2= 3.5×50= ×=
+=