××2=
1-45%=
=
52 -42=
12%×300=
÷0.5=
20÷10%=
3-=
302+402=
1.21×=
1+0.25×25%=
10÷10%=
×3=
÷1.5=
20:15 1.2:2.8
⑴÷6=
⑵3.5×=
⑶=
⑷×20%=
⑸()×4=
⑹1+×1.8=
⑺=
⑻6÷6÷=
×= += ÷= 2-= ÷=
÷= ×3= 0×= 4-= ÷3=
1-0.25= ÷= 0÷×32= -×=
×2= ×1= ×=
12×= ()2= ×7= ×= 5-=
×= +×=
0.5152>0.5152>0.5152>0.5152。