来自李晓的问题
用简便方法计算.58.26-13.6-6.4+1.7432.5÷2.5÷445×27+45×57+45.
用简便方法计算.
58.26-13.6-6.4+1.74
32.5÷2.5÷4
45×27+45×57+45.
1回答
2020-05-06 18:36
用简便方法计算.58.26-13.6-6.4+1.7432.5÷2.5÷445×27+45×57+45.
用简便方法计算.
58.26-13.6-6.4+1.74
32.5÷2.5÷4
45×27+45×57+45.
①58.26-13.6-6.4+1.74,
=(58.26+1.74)-(13.6+6.4),
=60-20,
=40;
②32.5÷2.5÷4,
=32.5÷(2.5×4),
=32.5÷10,
=3.25;
③45×27+45×57+45