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解答题.(1)(-3)×56×(-95)×(-14);(2)(+123)×(-49)×(-2.5)×(-325);(3)531×(-29)×(-2115)×(-412);(4)1.25×(-117)×(-2.5)×(-78).
题目详情
解答题.
(1)(-3)×
×(-
)×(-
);
(2)(+1
)×(-
)×(-2.5)×(-
);
(3)
×(-
)×(-2
)×(-4
);
(4)1.25×(-1
)×(-2.5)×(-
).
(1)(-3)×
5 |
6 |
9 |
5 |
1 |
4 |
(2)(+1
2 |
3 |
4 |
9 |
3 |
25 |
(3)
5 |
31 |
2 |
9 |
1 |
15 |
1 |
2 |
(4)1.25×(-1
1 |
7 |
7 |
8 |
▼优质解答
答案和解析
(1)原式=-3×
×
×
=-
;
(2)原式=-
×
×
×
=-
;
(3)原式=-
×
×
×
=-
;
(4)原式=-
×
×
×
=-
.
5 |
6 |
9 |
5 |
1 |
4 |
9 |
8 |
(2)原式=-
5 |
3 |
4 |
9 |
5 |
2 |
3 |
25 |
2 |
9 |
(3)原式=-
5 |
31 |
2 |
9 |
31 |
15 |
9 |
2 |
1 |
3 |
(4)原式=-
5 |
4 |
8 |
7 |
5 |
2 |
7 |
8 |
25 |
8 |
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