题目内容
计算:
①(-3
)-(-4.3)-|-1.7|
②
+(-
)-(-
)+(-
)
③-
×(-2)×(-
)
④8÷(-
)×(-
)
⑤(-48)×(-
+
-
)
⑥(-
)÷(
-
)
⑦-|-1
|×(
-
)+
÷(-
)
⑧-14+(
-
)2÷
+(-1)×(-2)2.
①(-3
1 |
2 |
②
1 |
2 |
2 |
3 |
4 |
3 |
1 |
2 |
③-
3 |
5 |
5 |
6 |
④8÷(-
4 |
3 |
3 |
4 |
⑤(-48)×(-
2 |
3 |
3 |
8 |
5 |
6 |
⑥(-
7 |
8 |
3 |
4 |
7 |
8 |
⑦-|-1
1 |
3 |
1 |
4 |
1 |
2 |
2 |
3 |
1 |
2 |
⑧-14+(
1 |
3 |
1 |
2 |
1 |
12 |
①原式=-3
+4.3-1.7=-2
;
②原式=(
-
)+(-
+
)=
;
③原式=-
×2×
=-1;
④原式=8×(-
)×(-
)=
;
⑤原式=32-18+40=54;
⑥原式=-
÷(-
)=
×8=7;
⑦原式=-
×(-
)+
×(-2)=
-
=-1;
⑧原式=-1+
×12-4=-5+
=-4
.
1 |
2 |
1 |
2 |
②原式=(
1 |
2 |
1 |
2 |
2 |
3 |
4 |
3 |
2 |
3 |
③原式=-
3 |
5 |
5 |
6 |
④原式=8×(-
3 |
4 |
3 |
4 |
9 |
2 |
⑤原式=32-18+40=54;
⑥原式=-
7 |
8 |
1 |
8 |
7 |
8 |
⑦原式=-
4 |
3 |
1 |
4 |
2 |
3 |
1 |
3 |
4 |
3 |
⑧原式=-1+
1 |
36 |
1 |
3 |
2 |
3 |
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