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计算:(1)(-3)+(-9);(2)(-4.7)+3.9;(3)(−312)−514;(4)(−1225)÷(−35);(5)(−3)×56×(−95)×(−14);(6)−2.5÷58×(−14);
题目详情
(−3
1 |
2 |
1 |
4 |
(4)(−
12 |
25 |
3 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
(6)−2.5÷
5 |
8 |
1 |
4 |
1 |
2 |
1 |
4 |
(−
12 |
25 |
3 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
(6)−2.5÷
5 |
8 |
1 |
4 |
12 |
25 |
3 |
5 |
(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
6 |
9 |
5 |
1 |
4 |
−2.5÷
5 |
8 |
1 |
4 |
5 |
8 |
1 |
4 |
▼优质解答
答案和解析
(1)(-3)+(-9)=-3-9=-12;
(2)(-4.7)+3.9=-0.8;
(3)(−3
)−5
=−8
;
(4)(−
)÷(−
)=−
×(−
)=
;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1. (−3
1 1 12 2 2)−5
1 1 14 4 4=−8
;
(4)(−
)÷(−
)=−
×(−
)=
;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1. −8
3 3 34 4 4;
(4)(−
)÷(−
)=−
×(−
)=
;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1. (−
12 12 1225 25 25)÷(−
3 3 35 5 5)=−
×(−
)=
;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1. −
12 12 1225 25 25×(−
5 5 53 3 3)=
;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1.
4 4 45 5 5;
(5)(−3)×
×(−
)×(−
)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1. (−3)×
5 5 56 6 6×(−
9 9 95 5 5)×(−
1 1 14 4 4)=-
×
×
=−
;
(6)−2.5÷
×(−
)=
×
×
=1.
5 5 52 2 2×
9 9 95 5 5×
1 1 14 4 4=−
;
(6)−2.5÷
×(−
)=
×
×
=1. −
9 9 98 8 8;
(6)−2.5÷
×(−
)=
×
×
=1. −2.5÷
5 5 58 8 8×(−
1 1 14 4 4)=
×
×
=1.
5 5 52 2 2×
8 8 85 5 5×
1 1 14 4 4=1.
(2)(-4.7)+3.9=-0.8;
(3)(−3
1 |
2 |
1 |
4 |
3 |
4 |
(4)(−
12 |
25 |
3 |
5 |
12 |
25 |
5 |
3 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
1 |
2 |
1 |
4 |
3 |
4 |
(4)(−
12 |
25 |
3 |
5 |
12 |
25 |
5 |
3 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
3 |
4 |
(4)(−
12 |
25 |
3 |
5 |
12 |
25 |
5 |
3 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
12 |
25 |
3 |
5 |
12 |
25 |
5 |
3 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
12 |
25 |
5 |
3 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
4 |
5 |
(5)(−3)×
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
5 |
6 |
9 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
5 |
2 |
9 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
9 |
8 |
(6)−2.5÷
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
5 |
8 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
5 |
2 |
8 |
5 |
1 |
4 |
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