脱式计算:(1)0.25×〔720÷(4-2.4×56)〕(2)〔149-8.19÷(5.25+134)〕×913÷17%(3)6713-(537-1713)+147(4)4.83×0.59+0.41×1.59-0.324×5.9(5)5.6-(□×314-156×□)÷523=235,□-数学
=
7 |
160 |
(2)〔1
4 |
9 |
3 |
4 |
9 |
13 |
=〔1
4 |
9 |
9 |
13 |
=〔1
4 |
9 |
9 |
13 |
=〔1
4 |
9 |
9 |
13 |
100 |
17 |
=(
4 |
9 |
17 |
100 |
9 |
13 |
100 |
17 |
=
4 |
9 |
9 |
13 |
100 |
17 |
17 |
100 |
9 |
13 |
100 |
17 |
=
400 |
221 |
9 |
13 |
=
400 |
221 |