问题
解答题
用递等式计算,能简算的要简算 14×75-624÷39 (7.6-3.6÷2)×1.5
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答案
(1)14×75-624÷39
=150×7-208÷13,
=1050-16,
=1034;
(2)(7.6-3.6÷2)×1.5
=(7.6-1.8)×1.5,
=5.8×1.5,
=8.7;
(3)
4 |
5 |
1 |
3 |
7 |
15 |
=
4 |
5 |
1 |
3 |
15 |
7 |
=
4 |
5 |
5 |
7 |
=
3 |
35 |
(4)
5 |
7 |
4 |
7 |
1 |
9 |
=
5 |
7 |
1 |
9 |
4 |
7 |
1 |
9 |
=(
5 |
7 |
4 |
7 |
1 |
9 |
=
9 |
7 |
1 |
9 |
=
1 |
7 |
(5)
2 |
3 |
5 |
6 |
3 |
4 |
3 |
8 |
=
2 |
3 |
1 |
12 |
8 |
3 |
=
2 |
3 |
2 |
9 |
=
8 |
9 |
(6)
7 |
11 |
2 |
5 |
7 |
10 |
=
7 |
11 |
2 |
5 |
3 |
10 |
=
7 |
11 |
1 |
10 |
=
7 |
11 |
=
70 |
11 |