题目内容
计算:
(1)-
-(-
)-(-
)-
(2)(-81)÷
×
÷(-16)
(3)(-
+
+
-
)×(-62)(用简便运算)
(4)-24+3×(-1)4-(-2)3.
(1)-
2 |
3 |
1 |
2 |
1 |
4 |
1 |
2 |
(2)(-81)÷
9 |
4 |
4 |
9 |
(3)(-
5 |
6 |
1 |
3 |
1 |
2 |
3 |
4 |
(4)-24+3×(-1)4-(-2)3.
(1)原式=-
+
+
-
=-
;
(2)原式=-81×
×
×(-
)=1;
(3)原式=(
+
+
-
)×(-36)=-30-12-18+27=-33;
(4)原式=-16+3+8=-5.
2 |
3 |
1 |
2 |
1 |
4 |
1 |
2 |
5 |
12 |
(2)原式=-81×
4 |
9 |
4 |
9 |
1 |
16 |
(3)原式=(
5 |
6 |
1 |
3 |
1 |
2 |
3 |
4 |
(4)原式=-16+3+8=-5.
练习册系列答案
相关题目