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计算题(每小题3分,满分24分,要求写出计算过程.)①(+8)-(-5)+(-9)-(+13);②(−135)+(−3.2)+|−1.8|;③0−(−13)+(−34)−(−23)−(+56);④(−34+23−112)×(−24);⑤238−[529−(−738)]−17
题目详情
(−1
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③0−(−
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④(−
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⑤2
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⑥
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⑦−0.85×
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⑧|
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0−(−
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④(−
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⑤2
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⑥
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⑦−0.85×
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⑧|
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(−
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⑤2
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⑥
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⑦−0.85×
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⑧|
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2
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⑥
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⑦−0.85×
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⑧|
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⑦−0.85×
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⑧|
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−0.85×
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⑧|
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▼优质解答
答案和解析
①原式=8+5-9-13
=-9;
②原式=-
-3.2+1.8
=-1.6-3.2+1.8
=-3;
③原式=
-
+
-
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
8 8 85 5 5-3.2+1.8
=-1.6-3.2+1.8
=-3;
③原式=
-
+
-
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
1 1 13 3 3-
+
-
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
3 3 34 4 4+
-
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
2 2 23 3 3-
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
5 5 56 6 6
=(
+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
1 1 13 3 3+
)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
2 2 23 3 3)-(
+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
3 3 34 4 4+
)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
5 5 56 6 6)
=1-
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
19 19 1912 12 12
=−
;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
−
7 7 712 12 12;
④原式=(-
)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
3 3 34 4 4)×(-24)+
×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
2 2 23 3 3×(-24)-
×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
1 1 112 12 12×(-24)
=18-16+2
=4;
⑤原式=
-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
19 19 198 8 8-
+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
47 47 479 9 9+
-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
59 59 598 8 8-
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
16 16 169 9 9
=(
+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
19 19 198 8 8+
)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
59 59 598 8 8)-(
+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
47 47 479 9 9+
)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
16 16 169 9 9)
=
-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
78 78 788 8 8-7
=
;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
11 11 114 4 4;
⑥原式=
×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
5 5 513 13 13×[-9-11+10]
=
×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
5 5 513 13 13×(-10)
−
;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
−
50 50 5013 13 13;
⑦原式=-0.85×
+4-6+0.85×
=-2;
⑧原式=
8 8 817 17 17+4-6+0.85×
=-2;
⑧原式=
8 8 817 17 17
=-2;
⑧原式=
举报
问题解析 问题解析
①先去括号,再按照有理数混合运算的顺序从左到右依次计算即可;
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减. ①先去括号,再按照有理数混合运算的顺序从左到右依次计算即可;
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.名师点评 名师点评
本题考点: 本题考点:
有理数的混合运算. 有理数的混合运算.
考点点评: 考点点评:
本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用. 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.
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zuowenSmall = "1";
=-9;
②原式=-
| 8 |
| 5 |
=-1.6-3.2+1.8
=-3;
③原式=
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 8 |
| 5 |
=-1.6-3.2+1.8
=-3;
③原式=
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 1 |
| 3 |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 3 |
| 4 |
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 2 |
| 3 |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 5 |
| 6 |
=(
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 1 |
| 3 |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 2 |
| 3 |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 3 |
| 4 |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 5 |
| 6 |
=1-
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 19 |
| 12 |
=−
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 7 |
| 12 |
④原式=(-
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 3 |
| 4 |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 2 |
| 3 |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 1 |
| 12 |
=18-16+2
=4;
⑤原式=
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 19 |
| 8 |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 47 |
| 9 |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 59 |
| 8 |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 16 |
| 9 |
=(
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 19 |
| 8 |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 59 |
| 8 |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 47 |
| 9 |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 16 |
| 9 |
=
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 78 |
| 8 |
=
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 11 |
| 4 |
⑥原式=
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 5 |
| 13 |
=
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 5 |
| 13 |
−
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 50 |
| 13 |
⑦原式=-0.85×
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 8 |
| 17 |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
| 8 |
| 17 |
=-2;
⑧原式=
|
作业帮用户
2017-10-28
举报
![]() |
|
作业帮用户
2017-10-28
举报
![]() |
作业帮用户
2017-10-28
举报
- 问题解析
- ①先去括号,再按照有理数混合运算的顺序从左到右依次计算即可;
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.
- 名师点评
-
- 本题考点:
- 有理数的混合运算.
-
- 考点点评:
- 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.

作业帮用户
2017-10-28
举报
- 问题解析
- ①先去括号,再按照有理数混合运算的顺序从左到右依次计算即可;
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.
- 名师点评
-
- 本题考点:
- 有理数的混合运算.
-
- 考点点评:
- 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.

作业帮用户
2017-10-28
举报
作业帮用户作业帮用户
2017-10-282017-10-28
举报
- 问题解析
- ①先去括号,再按照有理数混合运算的顺序从左到右依次计算即可;
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.
②先去括号、去绝对值符号、再按从左到右的顺序进行计算即可;
③先把分母相同的分数相加减,再把结果相加减即可;
④先把括号中的每一项分别同-24相乘,再把结果相加减即可;
⑤先把带分数化为假分数,再把分母相同的数相加减,最后把所得结果相加减;
⑥先提取公因式,再进行计算;
⑦先去括号,再按照有理数混合运算的法则进行计算;
⑧先去绝对值符号,再把分母相同的分数相加减,最后把结果相加减.
- 名师点评
-
- 本题考点:
- 有理数的混合运算.
-
- 考点点评:
- 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.
- 本题考点:
- 有理数的混合运算.
- 本题考点:
- 有理数的混合运算.
- 考点点评:
- 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.
- 考点点评:
- 本题考查的是有理数的混合运算,在解答此类题目时要注意各种运算律的灵活应用.
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已知a,b,c三点属于同一个区间内,fa的一阶导数大于0,fb的一阶导数小于0.求证fc的二阶导数 2020-07-20 …
用公式法解3x平方+8x﹣3=0,要有解题过程. 2020-07-22 …
一元二次方程问题1、不论x取何值,二次三项式x^2-2x+3的值都不小于2.请利用配方法说明理由. 2020-07-31 …
有关于x的方程mxm-2(m-2是指数)-m+3=0要过程快!1 2020-08-02 …
6x²+7x-3=0要求用因式分解法解!(3x-1)(2x+3)=0请问(3x-1)和(2x+3) 2020-08-03 …
求x^4+4x+3=0要求用配方法解x 2020-11-01 …
比较大小3^0.3与0.3^0.22^0.3与3^0.3log2(真数3)与lg3-=一眼就能看出来 2020-11-17 …
(x2-x)2-4(2x2-2x-3)=0(X^2-X)^2-4(2X^2-2X-3)=0要快,明天 2021-01-05 …