绝对值小于2的整数有 绝对值不大于三的非负整数有

问题描述:

绝对值小于2的整数有 绝对值不大于三的非负整数有
还有几道 -1又1/2÷3/4×(-0.2)×1又3/4÷1.4×(-3/5)
(-13又1/3)×1/5+(-6又2/3)×1/5+(+196又1/7)÷5
若│a+1│=0,则a=( )

绝对值小于2的整数有
-1 1
绝对值不大于三的非负整数有
0 1 2 3
-1又1/2÷3/4×(-0.2)×1又3/4÷1.4×(-3/5)
=(-3/2)÷(-3/20)×7/4÷7/5×(-3/5)
=(-3/2)×(-20/3)×7/4×5/7×(-3/5)
=10×7/4×5/7×(-3/5)
=10×5/4×(-3/5)
=10×(-3/4)
=-15/2
=-7.5
(-13又1/3)×1/5+(-6又2/3)×1/5+(+196又1/7)÷5
=-40/3×1/5+(-20/3)×1/5+28÷5
=-40/3×1/5+(-20/3)×1/5+28/5
=(-40/3 - 20/3)×1/5+28/5
=-20×1/5+28/5
=(-20+28)/5
=-48/5
若│a+1│=0,则a=( )
│a+1│=0
所以:(a+1)=0或者-(a+1)=0
a=-1 或者a=-1
所以:a=-1