来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/08/31 14:09:47
这些算式怎么简便计算?
0.8*32+3.2*2
2.6*3.7+26*0.63
53*64+0.53*3600
0.8*32+3.2*2
=0.8*32+32*0.2
=32*(0.8+0.2)
=32*1
=32
2.6*3.7+26*0.63
=26*0.37+26*0.62
=26*(0.37+0.63)
=26*1
=26
53*64+0.53*3600
=53*64+53*36
=53*(64+36)
=53*100
=5300