Question

我要初一年级有理数加减法100道 (最好有答案)

Answer 1

-13×三分之二-0.34×七分之二+三分之一×(-13)-七分之五*0.34
=-13×2/3
-0.34×2/7
-13×1/3
-5/7
×0.34
=-13×(2/3+1/3)
-0.34×(2/7+5/7)
=-13×1
-0.34×1
=-13.34
(2×3×4×5)×(二分之一-三分之一-四分之一+五分之一)
=(2×3×4×5)×(1/2-1/3
-1/4
+1/5)
=(2×3×4×5)×(1/2)-(2×3×4×5)×(1/3)-(2×3×4×5)×(1/4)+(2×3×4×5)×(1/5)
=3×4×5-2×4×5-2×3×5+2×3×4
=60-40-30+24
=14
-1.57×(+21.8)+6.28×(-24.7)-3.14×39.7
=-1.57×21.8
+1.57×4×(-24.7)
-1.57×2×39.7=-1.57(21.8+4×24.7+2×39.7)
=-1.57×200-38)+52+118+(-62)=
-100+170=70
抱歉，题有点少，但答案都是一步步算出来的
12+35+(-23)+0=
47-23=24
(-6)+8+(-4)+12
=
10
27+(-26)+33+(-27)=33-26=7
39+[-23]+0+[-16]=
39-39=0
[-18]+29+[-52]+60=
19
[-3]+[-2]+[-1]+0+1+2=
-3
[-301]+125+301+[-75]=
125-75=40
(-7分之1)+(-7分之2)+1又7分之3
=1
-0.5-(-3
)+2.75-(+7
)2.75-10.5=-7.75
39+[-23]+0+[-16]=
0
[-18]+[-52]+60=
-10
[-3]+[-2]+[-1]+0+1+2=
-3
=-314