Question

1.23×56+123×3.3+123×0.11=

Answer 1

【计算结果】1.23×56+123×3.3+123×0.11=488.31
【计算过程】
1.23×56+123×3.3+123×0.11
=123×0.56+123×3.3+123×0.11 ←1.23扩大100倍，56缩小100倍，即 1.23×56 改写成 123×0.56
=123×(0.56+3.3+0.11) ←提取公因数123
=123×3.97 ←括号内数值相加，即(0.56+3.3+0.11)=3.97
=123×(4-0.03) ←将3.97分解成易相乘的数
=492-3.69 ←运用乘法分配律，将括号内数值分别与123相乘
=488+4-3.69 ←将3.69分解成易相加减的数
=488.31

Answer 2

通过观察，发现题目应该是：
1.23×56+12.3×3.3+123×0.11
=123×0.56+123×0.33+123×0.11
=123×(0.56+0.33+0.11)
=123×1
=123

Answer 3

1.23*56+123*3.3+123*0.11
=1.23*（56+100*3.3+100*0.11）
=1.23*（56+330+11）
=1.23*397=488.31