小学四年级小数简便运算

2024-05-28 00:10:06

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。

好评回答
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)