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估算,找错处!1)23.1+105.2x0.1-3.9=23+105x0-4(约等于符号打不出来,符号不算)=23+0-4=192)(903-102-799)x100=(900-100-800)x100(约等于符号打不出来,符号不算)=0x100=0

题目详情
估算,找错处!
1)23.1+105.2x0.1-3.9
=23+105x0-4(约等于符号打不出来,符号不算)
=23+0-4
=19
2)(903-102-799)x100
=(900-100-800)x100(约等于符号打不出来,符号不算)
=0x100
=0
▼优质解答
答案和解析
1)23.1+105.2x0.1-3.9
=23+105x0-4(约等于符号打不出来,符号不算)
=23+0-4
=19
更改为:
1)23.1+105.2x0.1-3.9
=23+105x0.1-4
=23+11-4(约等于符号打不出来,符号不算)
=30
2)(903-102-799)x100
=(900-100-800)x100(约等于符号打不出来,符号不算)
=0x100
=0
更正为:
2)(903-102-799)x100
=【(900-100-800)+(3-2+1)】x100(约等于符号打不出来,符号不算)
=2x100
=200