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
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