早教吧 育儿知识 作业答案 考试题库 百科 知识分享

脱式计算:(能简算的要简算)①2.4×1.5+3.6÷1.5②0.32×0.25+0.08÷4③7.38-5.14+3.62-2.86④5.4÷[0.51÷(1.2-1.03)].

题目详情
脱式计算:(能简算的要简算)
①2.4×1.5+3.6÷1.5
②0.32×0.25+0.08÷4
③7.38-5.14+3.62-2.86
④5.4÷[0.51÷(1.2-1.03)].
▼优质解答
答案和解析
①2.4×1.5+3.6÷1.5,
=3.6+2.4,
=6;

②0.32×0.25+0.08÷4,
=0.8×(0.4×0.25)+0.08÷4,
=0.8×0.1+0.02,
=0.08+0.02,
=0.1;


③7.38-5.14+3.62-2.86,
=(7.38+3.62)-(5.14+2.86),
=11-8,
=3;

④5.4÷[0.51÷(1.2-1.03)],
=5.4÷[0.51÷0.17],
=5.4÷3,
=1.8.