36÷3= 500×4= 0÷8= 10+10÷5=
= = 29×3≈ 89÷99≈
56+44= 0.9×0.6= 20﹣3.7= 8÷100= 2.5×3.5×4=
-= += 10÷= 15×= ×24+24=