题目
题型:解答题难度:一般来源:不详
(1)-
1 |
3 |
1 |
4 |
1 |
7 |
1 |
4 |
6 |
7 |
(2)3.75-(-
1 |
2 |
2 |
3 |
3 |
4 |
(3)3
2 |
5 |
7 |
8 |
5 |
12 |
3 |
5 |
1 |
8 |
5 |
12 |
(4)(-4
5 |
8 |
3 |
8 |
1 |
4 |
(5)(-123)+3
1 |
3 |
1 |
4 |
1 |
3 |
3 |
4 |
(6)25×
3 |
4 |
1 |
4 |
(7)(-3)2÷2
1 |
4 |
2 |
3 |
1 |
3 |
(8)(-79)÷2
1 |
4 |
4 |
9 |
(9)[30-(
7 |
9 |
5 |
6 |
11 |
12 |
(10)(-1)3-(1-
1 |
2 |
(11)(
1 |
4 |
1 |
12 |
7 |
18 |
1 |
36 |
1 |
36 |
1 |
3 |
(12)-22-(1-
1 |
5 |
(13)99
17 |
18 |
(14)-36
9 |
11 |
(15)(-7)×(+5)-90÷(-15)
(16)(-
2 |
3 |
答案
1 |
3 |
1 |
4 |
1 |
4 |
1 |
7 |
6 |
7 |
=-
1 |
3 |
5 |
7 |
=9
8 |
21 |
(2)3.75-(-
1 |
2 |
2 |
3 |
3 |
4 |
=3.75+
1 |
2 |
2 |
3 |
3 |
4 |
=3.75-6
3 |
4 |
1 |
2 |
2 |
3 |
=-3-4
2 |
3 |
=-7
2 |
3 |
(3)3
2 |
5 |
7 |
8 |
5 |
12 |
3 |
5 |
1 |
8 |
5 |
12 |
=3
2 |
5 |
3 |
5 |
7 |
8 |
1 |
8 |
5 |
12 |
5 |
12 |
=9-4+2
=7;
(4)(-4
5 |
8 |
3 |
8 |
1 |
4 |
=(-4
5 |
8 |
3 |
8 |
1 |
4 |
=-7-7
=-14;
(5)(-123)+3
1 |
3 |
1 |
4 |
1 |
3 |
3 |
4 |
=(-123)+(+123)+3
1 |
3 |
1 |
3 |
1 |
4 |
3 |
4 |
=0+3-5
=-2;
(6)25×
3 |
4 |
1 |
4 |
=25×(
3 |
4 |
1 |
4 |
=25;
(7)(-3)2÷2
1 |
4 |
2 |
3 |
1 |
3 |
=9×
4 |
9 |
4 |
9 |
1 |
3 |
=
16 |
9 |
4 |
3 |
=
64 |
9 |
(8)(-79)÷2
1 |
4 |
4 |
9 |
=(-79)×
4 |
9 |
4 |
9 |
=(-79-29)×
4 |
9 |
=-108×
4 |
9 |
=-48;
(9)[30-(
7 |
9 |
5 |
6 |
11 |
12 |
=[30-(
7 |
9 |
5 |
6 |
11 |
12 |
=[30-28-30+33]÷(-5)
=5÷(-5)
=-1;
(10)(-1)3-(1-
1 |
2 |
=-1-
1 |
2 |
1 |
3 |
=-1-
1 |
2 |
1 |
3 |
=-1+1
=0;
(11)(
1 |
4 |
1 |
12 |
7 |
18 |
1 |
36 |
1 |
36 |
1 |
3 |
=(
1 |
4 |
1 |
12 |
7 |
18 |
1 |
36 |
2 |
3 |
=
1 |
4 |
1 |
12 |
7 |
18 |
1 |
36 |
2 |
3 |
=9+3-14-1+
2 |
3 |
=-
7 |
3 |
(12)-22-(1-
1 |
5 |
=-22-(1-
1 |
25 |
=-22-
24 |
25 |
1 |
8 |
=-22+
3 |
25 |
=-21
22 |
25 |
(13)99
17 |
18 |
=(100-
1 |
18 |
=100×(-9)-
1 |
18 |
=-900+
1 |
2 |
=-899
1 |
2 |
(14)-36
9 |
11 |
=-36×
1 |
9 |
9 |
11 |
1 |
9 |
=-4
1 |
11 |
(15)(-7)×(+5)-90÷(-15)
=-35+6
=-29;
(16)(-
2 |
3 |
=12-(-1.5)÷(-5)
=12-0.3
=11.7.
核心考点
试题【计算:(1)-13+514-317-514+1267;(2)3.75-(-12)+(-423)+(-0.5)+(-634);(3)325+(-278)+(-35】;主要考察你对有理数的混合运算等知识点的理解。[详细]
举一反三
1 |
xy |
1 |
(x+1)(y+1) |
1 |
(x+2)(y+2) |
1 |
(x+2011)(y+2011) |
1 |
2 |
A.减小1% | B.不改变 | C.增大1% | D.增大9% |
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