Question

3.6乘1.9+0.64乘19怎么简算

Answer 1

两种简便算法：
（一）
3.6×1.9+0.64×19
=（3.6÷10）×（1.9×10）+0.64×19
=0.36×19+0.64×19
=（0.36+0.64）×19
=1×19
=19

（二）
3.6×1.9+0.64×19
=3.6×1.9+（0.64×10）×（19÷10）
=3.6×1.9+6.4×1.9
=（3.6+6.4）×1.9
=1.9×10
=19

Answer 2

3.6×1.9+0.64×19
=3.6×1.9+6.4×1.9
=1.9×（3.6+6.4）
=1.9×10=19

Answer 3

3.6×1.9换成0.36×19，然后把19提出来就成了0.36+0.64=1，然后乘以19等于19

Answer 4

6.3*1.9+3.6*1.9=1.9*(3.6+6.4)=19

Answer 5