Question

小学四年级小数简便运算38.14-5.86-4.14 4.587+3.47-2.47 24.62-(4.63-1.85)

Answer 1

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）