Question

急求初一计算题答案！！速度

（0.5）+9/4-2.75+(-11/2)
=

-15+51-16+8
=

-24+3.2-18-3.2+0.3
=

-70/3-61/4+25/4-20/3
=

0-1-[(-1)-(-3/5)-(+5)+(+2/5)]
=

(-18.46)+(-3.16)+1.44+3.16+|-18.46|
=

(-1/2)+4/5+1/2+(-2/3)+(+1/3)
=

(-11/4)+(-12.125)+(0.75)+(+1/8)
=

Answer 1

（0.5）+9/4-2.75+(-11/2)
= 0.5 + 2.25 - 2.75 - 5.5
= 2.75 - 2.75 - 5.5
= - 5.5

-15+51-16+8
= 36 - 16 + 8
= 20 + 8
= 28

-24+3.2-18-3.2+0.3
= - 20.8 - 18 - 3.2 + 0.3
= - 38.8 - 3.2 + 0.3
= - 42 + 0.3
= - 41.7

-70/3-61/4+25/4-20/3
= - 280 / 12 - 183 / 12 + 75 / 12 + 80 / 12
= ( - 280 - 183 + 75 + 80 ) / 12
= ( - 463 + 75 + 80 ) / 12
= ( - 388 + 80 ) / 12
= -308 / 12
= - 77 / 3
= - 22 又 1 / 3

0-1-[(-1)-(-3/5)-(+5)+(+2/5)]
= -1 - [(-1) + 0.6 - 5 + 0.4 ]
= - 1 - [ （- 0.4 ） - 5 + 0.4）]
= - 1 - [ （- 5.4 ）+ 0.4 ]
= - 1 - （ - 5.0）
= - 1 + 5
=4

(-18.46)+(-3.16)+1.44+3.16+|-18.46|
= （ - 18.46 ） - 3.16 +1.44 + 3.16 + 18.46
=（ - 18.46 ）+ 18.46 - 3.16 + 3.16 +1.44
= 1.44

(-1/2)+4/5+1/2+(-2/3)+(+1/3)
= ( - 1 / 2) + 1 / 2 + 4 / 5 - 2 / 3 + 1 / 3
= 4 / 5 - 2 / 3 + 1 / 3
= 12 / 15 -10 / 15 + 5 / 15
= （ 12 - 10 + 5 ）/ 15
= 7 / 15

(-11/4)+(-12.125)+(0.75)+(+1/8)
= ( - 2.75 ) -12.125 ) + 0.75 + 0.125
= - 14.88 + 0.75 + 0.125
= - 14.13 +0.125
= - 14.005

Answer 2

（0.5）+9/4-2.75+(-11/2)
=0.5+2.25-2.75-5.5
=0.5-6
=-5.5

-15+51-16+8
=51+8-15-16
=59-31
=28

-24+3.2-18-3.2+0.3
=-24-18+0.3
=-40+0.3
=-39.7

-70/3-61/4+25/4-20/3
=-90/3-16/4
=-30-4
=-34

0-1-[(-1)-(-3/5)-(+5)+(+2/5)]
=-1-(-1+3/5-5+2/5)
=-1+1-1+5
=4

(-18.46)+(-3.16)+1.44+3.16+|-18.46|
=-18.46-3.16+1.44+3.16+18.46
=4.6

(-1/2)+4/5+1/2+(-2/3)+(+1/3)
=-1/2+4/5+1/2-2/3+1/3
=4/5-1/3
=12/15-5/15
=7/15

(-11/4)+(-12.125)+(0.75)+(+1/8)
=-11/4-12.125+3/4+0.125
=-8/4-12
=-2-12
=-14

Answer 3

-5.5
28
-41.7
-39
4
1.44
2/15
-14

Answer 4

-5.5
28
-41.7
-39
-6
1.44
0.6
-14

Answer 5

-5.5
28
-41.7
-39
4
1.44
7/15
-14.