用递等式计算(能简算得就要简算)34×25+35×34(14+514+34)÷176.5×6+3.5×6-35178×59+59×0.125-590.35÷[(56-23)×3]23÷(23+15)÷113-10.-数学
5 |
14 |
3 |
4 |
1 |
7 |
=(
1 |
4 |
3 |
4 |
5 |
14 |
=(1+
5 |
14 |
=1×7+
5 |
14 |
=7+
5 |
2 |
=9
1 |
2 |
(3)6.5×6+3.5×6-35,
=(6.5+3.5)×6-35,
=10×6-35,
=60-35,
=25;
(4)1
7 |
8 |
5 |
9 |
5 |
9 |
5 |
9 |
=(1
7 |
8 |
5 |
9 |
=(2-1)×
5 |
9 |
=1×
5 |
9 |
=
5 |
9 |
(5)0.35÷[(
5 |
6 |
2 |
3 |
=0.35÷[
1 |
6 |
=0.35÷
1 |
2 |
=0.7,
(6)
2 |
3 |
2 |
3 |
1 |
5 |
1 |
13 |
=
2 |
3 |
13 |
15 |