681减568加81简便方法?

2025-03-10 01:02:35
推荐回答(5个)
回答1:

解:681减568加81等于( 194 )
∵已知需求出681减568加81等于多少
∴681减568加81
= 681 - 568 + 81
= (700 - 19)- (600 - 32)+ ( 100 - 19)
= 700 - 19 - 600 + 32 + 100 - 19
= (700 - 600 + 100)+( -19 + 32 - 19)
= ( 100 + 100)+(13 - 19)
= 200 - 6
= 194
答:681减568加81等于194

回答2:

681-568+81的简便算法是:
把681分解成568+113即可。
=568+113-568+81
=113+81
=194

回答3:

直接按顺序计算比较简便。
681-568+81
=113+81
=194

回答4:

681-(568+81)
=681-81-568
=600-568
=32

回答5:

681-568+81
=668+13-568+81
=100+13+81
=194