题目
题型:解答题难度:一般来源:不详
(1)(-2.8)-(+1.2);
(2)(-6)+(+5);
(3)-(-2)-|-3|;
(4)(-
1 |
4 |
(5)(-0.6)+1.7+(+0.6 )+(-1.7 )+(-9 );
(6)|-2
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2 |
1 |
2 |
(7)3
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2 |
1 |
4 |
1 |
3 |
1 |
4 |
1 |
6 |
答案
=-2.8-1.2,
=-4;
(2)(-6)+(+5),
=-6+5,
=-1;
(3)-(-2)-|-3|,
=2-3,
=-1;
(4)(-
1 |
4 |
=-
1 |
4 |
=0;
(5)(-0.6)+1.7+(+0.6 )+(-1.7 )+(-9 );
=(-0.6)+(+0.6)+1.7+(-1.7)+(-9),
=-9;
(6)|-2
1 |
2 |
1 |
2 |
=2
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2 |
1 |
2 |
=6-1
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2 |
=4
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2 |
(7)3
1 |
2 |
1 |
4 |
1 |
3 |
1 |
4 |
1 |
6 |
=3
1 |
2 |
1 |
4 |
1 |
3 |
1 |
4 |
1 |
6 |
=3
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2 |
1 |
2 |
=1.
核心考点
试题【计算:(1)(-2.8)-(+1.2);(2)(-6)+(+5);(3)-(-2)-|-3|;(4)(-14)-(-0.25);(5)(-0.6)+1.7+(+】;主要考察你对有理数的运算等知识点的理解。[详细]
举一反三
(1)(-121.4)+(-78.5)-(-8
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2 |
(2)3
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2 |
1 |
4 |
1 |
3 |
1 |
4 |
1 |
6 |
(1)(-1.2)+[1-(-0.3)];
(2)(-0.5)-(-3
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4 |
1 |
2 |
3 |
4 |
1 |
8 |
3 |
8 |
1 |
4 |
1 |
2 |
1 |
3 |