Question

1.72*7.6+3.44*1.2怎么简便运算？

Answer 1

简便方法是将3.44变为1.72*2.
原式=1.72*7.6+1.72*2*1.2
=1.72*（7.6+2*1.2）
=1.72*10
=17.2

Answer 2

1.72*7.6+3.44*1.2
=1.72*7.6+1.72*2*1.2
=1.72*7.6+1.72*2.4=1.72*（7.6+2.4）=1.72*10=17。2

Answer 3

简化：
1.72*7.6+3.44*1.2
=3.44*3.8+3.44*1.2
=3.44 *5
=17.2
这既是解题过程

Answer 4

亲亲因为3.44×1.2=1.72×2×1.2=1.72×2.4，所以原式等于1.72×7.6+1.72×2.4，运用乘法分配律逆运算有1.72×（7.6+2.4）=17.2

Answer 5

因为3.44×1.2=1.72×2×1.2=1.72×2.4，所以原式等于1.72×7.6+1.72×2.4，运用乘法分配律逆运算有1.72×（7.6+2.4）=17.2