问题
解答题
875-75÷25×4
275÷(280-15×15)
909×[(118+602)÷80].
答案
(1)875-75÷25×4,
=875-3×4,
=875-12,
=863;
(2)275÷(280-15×15),
=275÷(280-225),
=275÷55,
=5;
(3)909×[(118+602)÷80],
=909×[720÷80],
=909×9,
=8181.
875-75÷25×4
275÷(280-15×15)
909×[(118+602)÷80].
(1)875-75÷25×4,
=875-3×4,
=875-12,
=863;
(2)275÷(280-15×15),
=275÷(280-225),
=275÷55,
=5;
(3)909×[(118+602)÷80],
=909×[720÷80],
=909×9,
=8181.