题目
题型:解答题难度:一般来源:不详
(1)(+4.3)-(-4)+(-2.3)-(+4).
(2)(-1)101×(-4
1 |
2 |
(3)-22-(-1)5×
81 |
(4)
15 |
3 | 6 |
答案
=4.3+4-2.3-4
=(4.3-2.3)+(4-4)
=2;
(2)(-1)101×(-4
1 |
2 |
=-1×(-
9 |
2 |
1 |
9 |
=
1 |
2 |
(3)-22-(-1)5×
81 |
=-4-(-1)×9
=-4+9
=5;
(4)
15 |
3 | 6 |
=2.055862753
≈2.1.
核心考点
试题【计算:(写出主要运算过程)(1)(+4.3)-(-4)+(-2.3)-(+4). (2)(-1)101×(-412)÷|-9|(3)-22-(-1)5】;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