Question

4.25X2.6十0.26X67.5最简便的计算方法？

Answer 1

有乘法和加法的混合运算，那肯定是用到乘法的分配律αⅹ(b十C)=αb十αc
α是相同的数，此题中乍一看没有相同的数，但仔细一看，会发现2.6与0.26很相像，所以想法把它俩变成相同的数就可以用公式了，具体步骤如下
4.25x2.6十0.26X67.5
=4.25x2.6十2.6x6.75
=2.6x(4.25十6.75)
=2.6X11
=28.6

Answer 2

4.25X2.6十0.26X67.5
=4.25X2.6十2.6X6.75
=（4.25+6.75）X2.6
=11X2.6
=（10+1）X2.6
=10X2.6+2.6
=26+2.6
=28.6

Answer 3

=4.25*2.6+(0.26*10)*(67.5/10)
=4.25*2.6+2.6*6.75
=2.6*(4.25+6.75)
=2.6*11
=2.6*(10+1)
=2.6*10+2.6
=26+2.6
=28.6

Answer 4

4.25×2.6十2.6×6.75
=2.6×（4.25十6.75）
=2.6X11
=28.6

Answer 5

4.25×2.6+0.26×67.5
=42.5×0.1×2.6+0.26×67.5
=42.5×0.26+0.26×67.5
=0.26×(42.5+67.5)
=0.26×110
=28.6