90÷3=30, 40×20=800, 360÷6=60, 12×40=480, 50÷6=
25
3 ,
0÷9=0, 50×80=4000, 30×13=390, 0×85=0, 3.5+0.5=4,
3.5+5=8.5, 4.2+8=12.2, 5-3.2=1.8, 1+0.4=1.4, 600÷4=150.
90÷3=30, 40×20=800, 360÷6=60, 12×40=480, 50÷6=
25
3 ,
0÷9=0, 50×80=4000, 30×13=390, 0×85=0, 3.5+0.5=4,
3.5+5=8.5, 4.2+8=12.2, 5-3.2=1.8, 1+0.4=1.4, 600÷4=150.