36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/27 17:19:59
![36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算](/uploads/image/z/185819-59-9.jpg?t=36.9-10.47%2B3.1%2B0.53+2.5%2A3.2%2A1.25+9.9%2A34+3.12%2B3.12%2A99+3.12%2B6.88%2A1.2%E7%94%A8%E7%AE%80%E4%BE%BF%E6%96%B9%E6%B3%95%E8%AE%A1%E7%AE%97)
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
解
36.9-10.47+3.1-0.53
=(36.9+3.1)-(10.47+0.53)
=40-11
=29
2.5*3.2*1.25
=2.5*4*8*1.25
=(2.5*4)*(8*1.25 )
=10*10
=100
9.9*34
=(10-0.1)*34
=10*34-0.1*34
=340-3.4
=336.6
3.12+3.12*99
=3.12*(1+99)
=3.12*100
=312
3.12*1.2+6.88*1.2
=(3.12+6.88)*1.2
=10*1.2
=12
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
36.9-10.47+3.1+0.53 2.5*3.2*1.25 9.9*34 3.12+3.12*99 3.12+6.88*1.2用简便方法计算
用简便方法计算.8.16+5.49+2用简便方法计算.8.16+5.49+2.84+4.51= 36.9-10.47+3.1-10.53=
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