0×= ×7= 10×= 39×=
24×= ×= ×= 1.8×=
×5= ÷ = ÷8=
0÷ = × = ×1.5=
=
2×= += ×= 0.5×=
×3.5= ÷8= 180÷= 1-=
0.56×= ÷= 12.5%×= 1.5:0.25=(化简比)
7.2÷= 0.34÷10%= 12×= :0.45=(求比值)
27+68= 341﹣103= 270÷18= -=
2÷= 0.42×0.2= 3.5×50= ×=
+=