求两道五年级简便计算题

27.3×3.6+36×7.27
＝2.73×36＋36×7.27
＝36×（2.73＋7.27）
＝36×10
＝360
好像题目错了吧？那个0.232似乎是0.23
4.69×2.3+53.1×0.23)÷2.3
＝（4.69×2.3＋5.31×2.3）÷2.3
＝[2.3×（4.69+5.31）]÷2.3
＝2.3×10÷2.3
祝您愉快！
＝10

27.3×3.6+36×7.27
＝2.73×36＋36×7.27
＝36×（2.73＋7.27）
＝36×10
＝360

应该是
(4.69×2.3+53.1×0.23)÷2.3
吧

(4.69×2.3+53.1×0.23)÷2.3
＝（4.69×2.3＋5.31×2.3）÷2.3
＝[2.3×（4.69+5.31）]÷2.3
＝2.3×10÷2.3
＝10

(1) (27.3+72.7)x3.6=360
第二题,题目打错了把.
应该是(4.69×2.3+53.1×0.23)÷2.3=?
[(46.9+53.1)x2.3]÷2.3=100

27.3×3.6+36×7.27
=3.68(72.7+27.3)
=3.68*100
=368
(4.69×2.3+53.1×0.232)÷2.3
=4.69*2.3/2.3+53.1*0.232/2.3

27.3*3.6+36*7.27=36*(7.27+2.73)=360
(4.69*2.3+53.1*0.232)/2.3=2.3*(4.69+5.31)/2.3=10