题目内容
计算:
①8+(-10)+(-2)-(-5);
②2
-3
-5
+(-3
);
③8×(-
)÷|-16|;
④18×(-
)+13×
-4×
;
⑤(
-
+
)×(-36);
⑥(-
)×
÷(-
)×(-
);
⑦(-
)×(-4)2-0.25×(-5)×(-4)3;
⑧(-1)2008+(-5)×[(-2)3+2]-(-4)2÷(-
).
①8+(-10)+(-2)-(-5);
②2
1 |
7 |
2 |
3 |
1 |
3 |
1 |
7 |
③8×(-
4 |
5 |
④18×(-
2 |
3 |
2 |
3 |
2 |
3 |
⑤(
1 |
2 |
5 |
9 |
7 |
12 |
⑥(-
3 |
4 |
3 |
8 |
9 |
16 |
1 |
8 |
⑦(-
5 |
8 |
⑧(-1)2008+(-5)×[(-2)3+2]-(-4)2÷(-
1 |
2 |
①原式=8-10-2+5
=13-12
=1;
②原式=2
-3
-3
-5
=-1-9
=-10;
③原式=-8×
×
=-
;
④原式=-12+(13-4)×
=-12+9×
=-12+6
=-6;
⑤原式=-
×36+
×36-
×36
=-18+20-21
=-19;
⑥原式=-
×
×
×
=-
;
⑦原式=-
×16-0.25×5×64
=-10-80
=-90;
⑧原式=1-5×(-8+2)-16÷(-
)
=1-5×(-6)+32
=1+30+32
=63.
=13-12
=1;
②原式=2
1 |
7 |
1 |
7 |
2 |
3 |
1 |
3 |
=-1-9
=-10;
③原式=-8×
4 |
5 |
1 |
16 |
=-
2 |
5 |
④原式=-12+(13-4)×
2 |
3 |
=-12+9×
2 |
3 |
=-12+6
=-6;
⑤原式=-
1 |
2 |
5 |
9 |
7 |
12 |
=-18+20-21
=-19;
⑥原式=-
3 |
4 |
3 |
8 |
16 |
9 |
1 |
8 |
=-
1 |
16 |
⑦原式=-
5 |
8 |
=-10-80
=-90;
⑧原式=1-5×(-8+2)-16÷(-
1 |
2 |
=1-5×(-6)+32
=1+30+32
=63.
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