Question

脱式计算．（能用简便方法的就用简便方法计算）[8.5-（3.6+3.6）]÷2.6 10.1×8...

脱式计算．（能用简便方法的就用简便方法计算）[8.5-（3.6+3.6）]÷2.6 10.1×87 1.4×[（7.5+38.4）÷0.9]．

Answer 1

（1）[8.5-（3.6+3.6）]÷2.6
=[8.5-7.2]÷2.6
=1.3÷2.6
=0.5；

（2）10.1×87
=（10+0.1）×87
=10×87+0.1×87
=870+8.7
=878.7；

（3）1.4×[（7.5+38.4）÷0.9]
=1.4×[45.9÷0.9]
=1.4×51
=71.4．