①[(915-712)÷234]÷115②0.52×249+759×0.52③(125-45)×(2+23)÷135④[(4.25-318)×2.4+10÷614]÷0.13⑤24×(712+56)÷(6.375-538)⑥(1535÷3-223×178)÷138.-数学
=[
17 |
10 |
11 |
4 |
6 |
5 |
=
34 |
55 |
5 |
6 |
=
17 |
33 |
(2)0.52×2
4 |
9 |
5 |
9 |
=(2
4 |
9 |
5 |
9 |
=10×0.52;
=5.2;
(3)(1
2 |
5 |
4 |
5 |
2 |
3 |
3 |
5 |
=
3 |
5 |
8 |
3 |
5 |
8 |
=
3 |
5 |
5 |
3 |
=1;
(4)[(4.25-3
1 |
8 |
1 |
4 |
=[(4
1 |
4 |
1 |
8 |