
7年级上册数学有理数的加减法的题,我要简便点的。比如(-3.8)+(-7)。(-10)+(+6)……
2个回答
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-38)+52+118+(-62)=
(-32)+68+(-29)+(-68)=
(-21)+251+21+(-151)=
12+35+(-23)+0=
(-6)+8+(-4)+12 =
27+(-26)+33+(-27)
12+35+(-23)+0=
39+[-23]+0+[-16]=
[-18]+29+[-52]+60=
[-3]+[-2]+[-1]+0+1+2=
[-301]+125+301+[-75]=
[-1]+[-1/2]+[+3/4]+[-1/4]=
[-7/2]+[+5/6]+[-0.5]+4/5+19/6=
[-26.54]+[-6.14]+18.54+6.14=
1.125+[-17/5]+[-1/8]+[-0.6]=
( -23)-(-27)—27
(-1)+2+(-3)-(-4)
26+(-73)
(-84)+(-49)
7.1+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+17/7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
–3-[4-(4-3.5×2 )]×[-2+(-3) ]
8+(- )- 5- (- 0.25)
(-3 )÷(4 -12 )÷(-2 )×(-1 )
(-2)14×(-3)15×(-1 )14
-42+5×(-4)2-(-1)51×(-2 )+(-2 )÷(-2 )
-1 ×3 -1 ×4 -3×(-1 )
(-32)+68+(-29)+(-68)=
(-21)+251+21+(-151)=
12+35+(-23)+0=
(-6)+8+(-4)+12 =
27+(-26)+33+(-27)
12+35+(-23)+0=
39+[-23]+0+[-16]=
[-18]+29+[-52]+60=
[-3]+[-2]+[-1]+0+1+2=
[-301]+125+301+[-75]=
[-1]+[-1/2]+[+3/4]+[-1/4]=
[-7/2]+[+5/6]+[-0.5]+4/5+19/6=
[-26.54]+[-6.14]+18.54+6.14=
1.125+[-17/5]+[-1/8]+[-0.6]=
( -23)-(-27)—27
(-1)+2+(-3)-(-4)
26+(-73)
(-84)+(-49)
7.1+(-2.04)
4.23+(-7.57)
(-7/3)+(-7/6)
9/4+(-3/2)
3.75+(2.25)+5/4
-3.75+(+5/4)+(-1.5)
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+17/7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
–3-[4-(4-3.5×2 )]×[-2+(-3) ]
8+(- )- 5- (- 0.25)
(-3 )÷(4 -12 )÷(-2 )×(-1 )
(-2)14×(-3)15×(-1 )14
-42+5×(-4)2-(-1)51×(-2 )+(-2 )÷(-2 )
-1 ×3 -1 ×4 -3×(-1 )
更多追问追答
追问
可以不要这么难吗?在简单点,最好不要用假分数啦,还有,不要乘除法,还没学啊,就+-法
追答
简化了一下,希望你能用得上。
-38)+52+118+(-62)=
(-32)+68+(-29)+(-68)=
(-21)+251+21+(-151)=
(-16)+34+(+17)+(-78)=
(-81)+351+(-51)+(-150)=
12+35+(-23)+0=
(-6)+8+(-4)+12 =
27+(-26)+33+(-27)
12+35+(-23)+0=
39+[-23]+0+[-16]=
[-18]+29+[-52]+60=
[-3]+[-2]+[-1]+0+1+2=
[-301]+125+301+[-75]=
[-1]+[-1/2]+[+3/4]+[-1/4]=
[-1/2]+[+5/6]+[-0.5]+4/5-5/6=
[-26.54]+[-6.14]+18.54+6.14=
1.125+[-2/5]+[-1/8]+[-0.6]=
( -23)-(-27)—27
(-1)+2+(-3)-(-4)
26+(-73)
(-84)+(-49)
7.1+(-2.04)
4.23+(-7.57)
(-1/3)+(-1/6)+(+1/2)
1/4+(-1/2)
3.75+(2.25)+1/4
-3.75+(-1/4)+(-1.5)
(-1/4)+(-1/3)+(+2/3)+(1/6)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(+1.3)-(+1.7)
(-2)-(+2/3)
|(-7.2)-(-6.3)+(1.1)|
(-1/4)-(-3/4)|-|1-1/4-|-3/4|)
–3-[4-(4-3.5×2 )]×[-2+(-3) ]
8+(- )- 5- (- 0.25)
(-3 )÷(4 -12 )÷(-2 )×(-1 )
(-2)14×(-3)15×(-1 )14
-42+5×(-4)-(-1)×(-51 )+(-2 )÷(-2 )
-1 ×3 -1 ×4 -3×(-1 )
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