1.067 6×x 6x 36+a a+36
39.6÷32 39.6 18.9×0.8 18.9 2.3÷2.3 1
526﹣198= 0.32×2.5= n×n= kg:240g=
24×+= 2.6+1.98= -= 1.6÷25%=
÷= ×÷×0=