Question

6.3+3.7x2.8可以简便运算吗？

Answer 1

个人觉得该题目如果可以简便计算的话，应该是这样。但不一定正确。
6.3+3.7×2.8
＝6.3+3.7×（3－0.2）
＝6.3+3.7×3－3.7×0.2
＝6.3+11.1－0.74
＝16.66

Answer 2

这个题没有简算条件，倒有个陷阱+
6.3+3.7×2.8
＝6.3+10.36
＝16.66

Answer 3

(6.3+3.7)ⅹ2.8=100x2.8=280

Answer 4

6.3+3.7*2.8
1/6.3+10.36
2/16.66

Answer 5

6.3+3.7×2.8
=10-3.7+3.7×2.8
=10+3.7×(2.8-1)
=10+3.7×1.8
=16.66