1)90/30=3 3*7=21 21+49=70 2)40/2=20 20*5=100 100-40=60 3)27/3=9 9/9=1 1+54=55 4)72/8=9 9*3=27 96-27=79
90:30=3*7=21+49=70 40:2=20*5=100-20*2+40 27*3=9:9=1+54+55 72:8=9*3=27 96-27=69
