在计算小数加、减法时,一定要把 .计算所得的结果如果小数部分的末尾有“0”,一般应 .
= ÷ =9: == %= 折.
= ÷ = (填小数)
12÷ =0.75== :36= %
÷ =0.125=2÷ == %
: == ÷20= 折.