Question

2.39✘5.3+2.39✘0.45+239✘0.002怎么简算？

Answer 1

2.39x5.3+2.39x0.45+239x0.002
=2.39x5.3+2.39x0.45+2.39x0.2
=2.39x（5.3+0.45+0.2）
=2.39x5.95
=14.2205

Answer 2

=2.39*（5.3+0.45+0.2）
=2.36*5.95
=（2.4-0.4）（6-0.05）
=14.4+0.02-2.4-0.12
=14.42-2.4-0.12
=12.02-0.12
=11.9

Answer 3

很高兴回答此题。
原式=2.39(5.3+0.45+0.2)
=2.39x1
=2.39
答:简算结果为2.39
欢迎继续出题。

Answer 4

根据乘法分配律，提取相同的因数，可以使计算简便。
2.39×5.3+2.39×4.5+239×0.002
＝2.39×5.3+2.39×4057+2.39×0.2
＝2.39×（5.3+4.5+0.2）
=2.39×10
＝23.9

Answer 5

先把239转换成小数