题目
题型:解答题难度:一般来源:不详
(1)-23÷(-
1 |
2 |
1 |
3 |
(2)199
198 |
199 |
(3)[3
1 |
3 |
2 |
3 |
1 |
5 |
(4)-0.52+(-
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2 |
答案
1 |
2 |
1 |
3 |
=-8÷
1 |
4 |
1 |
27 |
=-8×4+(-
1 |
3 |
=(-32)+(-1)+(-
1 |
3 |
=-33
1 |
3 |
(2)199
198 |
199 |
=(200-
1 |
199 |
=200×(-5)+(-
1 |
199 |
=-1000+
5 |
199 |
=-(1000-
5 |
199 |
=-999
194 |
199 |
(3)[3
1 |
3 |
2 |
3 |
1 |
5 |
=[
10 |
3 |
3 |
2 |
1 |
5 |
=(-1)4+54-25
=1+54-25
=55-25
=30;
(4)-0.52+(-
1 |
2 |
1 |
2 |
1 |
3 |
1 |
2 |
=-0.25+
1 |
4 |
27 |
8 |
1 |
27 |
1 |
16 |
=-0.25+0.25-8-
1 |
8 |
=-8-2
=(-8)+(-2)
=-10.
核心考点
试题【计算下列各题(1)-23÷(-12)2+9×(-13)3-(-1)100;(2)199198199×(-5)(3)[313÷(-23)×15]4-2×(-3)3】;主要考察你对有理数的混合运算等知识点的理解。[详细]
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