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计算:(1)(-30)-(-28)+(-70)-88(2)-[3.5-(-1.13)-(-0.33)]+2.5(3)(-1114)×(-113)×(-0.3)×313×(-35)(4)1-125×[2-(-3)]2(5)(1-112-38+712)×(-24)(6)-23÷49×(-23)2+(-0.8)-5×(-122
题目详情
计算:
(1)(-30)-(-28)+(-70)-88
(2)-[3.5-(-1.13)-(-0.33)]+2.5
(3)(-11
)×(-1
)×(-0.3)×3
×(-
)
(4)1-
×[2-(-3)]2
(5)(1-1
-
+
)×(-24)
(6)-23÷
×(-
)2+(-0.8)-5×(-
).
(1)(-30)-(-28)+(-70)-88
(2)-[3.5-(-1.13)-(-0.33)]+2.5
(3)(-11
1 |
4 |
1 |
3 |
1 |
3 |
3 |
5 |
(4)1-
1 |
25 |
(5)(1-1
1 |
2 |
3 |
8 |
7 |
12 |
(6)-23÷
4 |
9 |
2 |
3 |
1 |
22 |
▼优质解答
答案和解析
(1)原式=-30+28-70-88
=-100-60
=-160;
(2)原式=-[3.5+1.13+0.33]+2.5
=-4.96+2.5
=-2.46;
(3)原式=
×
×
×
×
=9;
(4)原式=1-
×(2+3)2
=1-
×25
=1-1
=0;
(5)原式=1×(-24)-
×(-24)-
×(-24)+
×(-24)
=-24+36+9-14
=7;
(6)原式=-8×
×
-
-5×(-
)
=-8-
+
=-7
.
=-100-60
=-160;
(2)原式=-[3.5+1.13+0.33]+2.5
=-4.96+2.5
=-2.46;
(3)原式=
45 |
4 |
4 |
3 |
3 |
10 |
10 |
3 |
3 |
5 |
=9;
(4)原式=1-
1 |
25 |
=1-
1 |
25 |
=1-1
=0;
(5)原式=1×(-24)-
3 |
2 |
3 |
8 |
7 |
12 |
=-24+36+9-14
=7;
(6)原式=-8×
9 |
4 |
4 |
9 |
4 |
5 |
1 |
4 |
=-8-
4 |
5 |
5 |
4 |
=-7
11 |
20 |
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