×= 24×= ×= ×0.36=
÷9= 1÷= 8÷= ÷=
20-4%=
×= ×= ÷= 1÷= -=
×10= 36×25%= ÷×0= 1÷×9= +++=
×9= = ÷4= =
km=m t=kg