80÷19≈
318÷60≈
632÷90≈
242÷60≈
630÷69≈
240÷81≈
813÷92≈
122÷62≈
果爸爸想买的书标价为80元。
60÷80%= 75%+0.25= = =
× = 4÷0.8= 3﹣ = 0.23=
÷ = 786﹣298= 25×0.7×4= 8.7+7=
( ﹣0.375)÷ = × ÷ × =