几十道简单有理数的加减法试题 (附加答案)
(-20)+(+3)-(-5)-(+7)=(-20)+(+3)+(+5)+(-7)={(-20)+(-7)}+{(+5)+(+3)}=(-27)+(+8)=-19 是这种形式的吗?
①-7/5 +(+ 1/10)
=-1.3
②90-(-3)
=93
③-0.5-(-3 )+2.75-(+7 )
=-0.75
④ (-2.8)+(+1.9)
=-0.9
1)(-9)-(-13)+(-20)+(-2)
=-18
(2) 3+13-(-7)÷6
=17又6分之1
(3) (-2)-8-14-13
=-37
(4) (-7)×(-1) ÷7+8
=9
(5) (-11)×4-(-18) ÷18
=-43
(-38)+52+118+(-62)
=70
(-32)+68+(-29)+(-68)
=-61
(-21)+251+21+(-151)
=0
12+35+(-23)+0
=14
(-6)+8+(-4)+12
=10
27+(-26)+33+(-27)
=7
39+[-23]+0+[-16]
=0
[-18]+29+[-52]+60
=153
[-3]+[-2]+[-1]+0+1+2
=9
(-301)+125+301+(-75)
=50
11/12-10/12= -1/12
=36
1/3- 7/12-7/18
=-23/36
1 -1/3-1 1/5
=7/15
10-7/10= 9又3/10
5/24+3/8
=7/8
4.39x1/13x2/3
=2
1+(-2)+(-3)+4+5+(-6)+(-7)+8+9+(-10)+(-11)+12
=0
(-7分之1)+(-7分之2)+1又7分之3
=1
[-18]+29+[-52]+60=
[-3]+[-2]+[-1]+0+1+2=
[-301]+125+301+[-75]=
[-1]+[-1/2]+[39+[-23]+0+[-16]= 0
[-18]+29+[-52]+60= 19
[-3]+[-2]+[-1]+0+1+2= -3
[-301]+125+301+[-75]= 50
[-1]+[-1/2]+3/4+[-1/4]= -1
[-7/2]+5/6+[-0.5]+4/5+19/6= 1.25
[-26.54]+[-6.14]+18.54+6.14= -8
1.125+[-17/5]+[-1/8]+[-0.6]= -3+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]=
0.75+[-11/4]+0.125+12又5/7+[-3/8]=
[-4/9]+[-3/5]+[+11/8]+[+5/9]+[-1/8]+[-0.4]=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]=
0.75+[-11/4]+0.125+12又5/7+[-3/8]=
[-4/9]+[-3/5]+[+11/8]+[+5/9]+[-1/8]+[-0.4]=
答案不要了吧 很简单的
39+[-23]+0+[-16]=0
[-18]+29+[-52]+60=19
[-3]+[-2]+[-1]+0+1+2=-3
[-301]+125+301+[-75]=
4-7= -3
0-(+3)= -3
0-(-3)= 3
(-1)-(-3) = 2
(-5)-(+3)= -8
1-4/9 = 9/5
1-7/10=10/3
8/15-5=
7-15=
2/8-5/8=
8/27-5 =
4-27 =
11/12-10/12=
16/21-1/7 =
4/ 2-(3+3 )=
1/3- 7/12-7/18=
1 -1/3-1 1/5 =
10-7/10=
5/24+3/8 =
-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=
-2+3-47
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