320÷4= 60÷30= 39×40= 327-127=
340×0= 35×60= 1300×2= 87×2=
= =
56+44= 0.9×0.6= 20﹣3.7= 8÷100= 2.5×3.5×4=
-= += 10÷= 15×= ×24+24=