38.14-5.86-4.14 4.587+3.47-2.47 24.62-(4.63-1.85)
=? =? =?
=?(简便运算,递等式计算) =?(简便运算,递等式计算)=?(简便运算,递等式计算)(3题都可加“=?”行数。
对不起,发错了,反正就是38.14-5.86-4.14 4.587+3.47-2.47 24.62-(4.63-1.85)这三题简便运算,递等式计算
38.14-5.86-4.14
=(38.14-4.14)-5.86
=34-5.86
=28.14
4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587
24.62-(4.63-1.85)
=24.62-4.63+1.85
(这题是不是写错了,应该是24.63吧?如果不是那还真不知道怎么算简便了)
=(38.14-4.14)-5.86
=34-5.86
=28.14
4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587
24.62-(4.63-1.85)
=24.62-4.63+1.85
(这题是不是写错了,应该是24.63吧?如果不是那还真不知道怎么算简便了)
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第1个回答 2010-04-07
38.14-5.86-4.14
= 38.14-(5.86+4.14)
= 38.14-10
= 28.14
4.587+3.47-2.47
= 4.587+(3.47-2.47)
= 4.587+1
= 5.587
24.62-(4.63-1.85) (这个参数是不是写错了?! 我认为小数部分应该是一样的。)
= 24.62-4.63+1.85
= 19.99+1.85
= 21.84
= 38.14-(5.86+4.14)
= 38.14-10
= 28.14
4.587+3.47-2.47
= 4.587+(3.47-2.47)
= 4.587+1
= 5.587
24.62-(4.63-1.85) (这个参数是不是写错了?! 我认为小数部分应该是一样的。)
= 24.62-4.63+1.85
= 19.99+1.85
= 21.84
第2个回答 2010-04-07
38.14-5.86-4.14
=38.14-(5.86+4.14)
=38.14-10
=28.14
4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587
24.62-(4.63-1.85)??
是不是写错了应该为24.62-(4.62-1.85)
=24.62-4.62+1.85
=20+1.85
=21.85
=38.14-(5.86+4.14)
=38.14-10
=28.14
4.587+3.47-2.47
=4.587+(3.47-2.47)
=4.587+1
=5.587
24.62-(4.63-1.85)??
是不是写错了应该为24.62-(4.62-1.85)
=24.62-4.62+1.85
=20+1.85
=21.85
第3个回答 2010-04-07
38.14-4.14=34 34-5.86=28.14
3.47-2.47=1 4.587+1=5.587
24.62-4.63=19.99 19.99+0.01=20 20+1.85=21.85 21.85-0.01=21.84
没看懂楼主的意思,不知道这么做对不对
3.47-2.47=1 4.587+1=5.587
24.62-4.63=19.99 19.99+0.01=20 20+1.85=21.85 21.85-0.01=21.84
没看懂楼主的意思,不知道这么做对不对
第4个回答 2010-04-07
38.14-5.86-4.14=34-5.86=28.14
4.587+3.47-2.47=4.587+1+2.47-2.47=5.587
24.62-(4.63-1.85)=24.63-4.63+1.84=20+1.84=21.84
4.587+3.47-2.47=4.587+1+2.47-2.47=5.587
24.62-(4.63-1.85)=24.63-4.63+1.84=20+1.84=21.84