有理数的加法与减法:a+b=a+( )(-2)-(-5)=______0-(-4)=_____(-6)-3=______1-(+37)=______温度3℃比-7℃高______;温度-8℃比-2℃低______.列式计算:(-1.7)-(-2.5)==2/3-(-1/2)==[(-5)-(-8)]-(-4)==3-[(-3)-10]==填空
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![有理数的加法与减法:a+b=a+( )(-2)-(-5)=______0-(-4)=_____(-6)-3=______1-(+37)=______温度3℃比-7℃高______;温度-8℃比-2℃低______.列式计算:(-1.7)-(-2.5)==2/3-(-1/2)==[(-5)-(-8)]-(-4)==3-[(-3)-10]==填空](/uploads/image/z/5042499-51-9.jpg?t=%E6%9C%89%E7%90%86%E6%95%B0%E7%9A%84%E5%8A%A0%E6%B3%95%E4%B8%8E%E5%87%8F%E6%B3%95%EF%BC%9Aa%2Bb%3Da%2B%28+%29%EF%BC%88-2%EF%BC%89-%EF%BC%88-5%EF%BC%89%3D______0-%28-4%29%3D_____%28-6%29-3%3D______1-%28%2B37%29%3D______%E6%B8%A9%E5%BA%A63%E2%84%83%E6%AF%94-7%E2%84%83%E9%AB%98______%3B%E6%B8%A9%E5%BA%A6-8%E2%84%83%E6%AF%94-2%E2%84%83%E4%BD%8E______.%E5%88%97%E5%BC%8F%E8%AE%A1%E7%AE%97%EF%BC%9A%EF%BC%88-1.7%EF%BC%89-%EF%BC%88-2.5%EF%BC%89%3D%3D2%2F3-%EF%BC%88-1%2F2%EF%BC%89%3D%3D%5B%28-5%29-%28-8%29%5D-%28-4%29%3D%3D3-%5B%28-3%29-10%5D%3D%3D%E5%A1%AB%E7%A9%BA)
有理数的加法与减法:a+b=a+( )(-2)-(-5)=______0-(-4)=_____(-6)-3=______1-(+37)=______温度3℃比-7℃高______;温度-8℃比-2℃低______.列式计算:(-1.7)-(-2.5)==2/3-(-1/2)==[(-5)-(-8)]-(-4)==3-[(-3)-10]==填空
有理数的加法与减法:
a+b=a+( )
(-2)-(-5)=______
0-(-4)=_____
(-6)-3=______
1-(+37)=______
温度3℃比-7℃高______;温度-8℃比-2℃低______.
列式计算:
(-1.7)-(-2.5)
=
=
2/3-(-1/2)
=
=
[(-5)-(-8)]-(-4)
=
=
3-[(-3)-10]
=
=
填空:
-8-4=( ) -20-(-12)=( ) -3/2-1/2=(___) |-9|-5=( )
(-3)-______=-1 _____-22=-14
海拔-200m比-300m高_______.从海拔250m下降到-100m下降了_____.
比-5小-7的数是_____,比0小-3的数是_______.
计算:
16-23 (-15)-(-27) 2.6-(-3.5)
有理数的加法与减法:a+b=a+( )(-2)-(-5)=______0-(-4)=_____(-6)-3=______1-(+37)=______温度3℃比-7℃高______;温度-8℃比-2℃低______.列式计算:(-1.7)-(-2.5)==2/3-(-1/2)==[(-5)-(-8)]-(-4)==3-[(-3)-10]==填空
b,3,4,-3,36,10度,-6度,-1.7+2.5=0.8,1又6分之1,7,10,-4,-8,
-2,4,-2,9,100m,350,-13,-3,-7,12,6,1口算的有错的请原谅!
b 3 4 -9 -36 高10 低6