怎样简便怎样算. 9×4×15 176-(76+38) 18+(159+82) 31+992÷32 900÷25÷4 125÷(50÷6)
问题描述:
怎样简便怎样算. 9×4×15 |
176-(76+38) |
18+(159+82) |
31+992÷32 | 900÷25÷4 | 125÷(50÷6) |
答
(1)9×4×15,
=9×(4×15),
=9×60,
=540;
(2)176-(76+38),
=176-76-38,
=100-38,
=62;
(3)18+(159+82),
=18+82+159,
=100+159,
=259;
(4)31+992÷32,
=31+31,
=62;
(5)900÷25÷4,
=900÷(25×4),
=900÷100,
=9;
(6)125÷(50÷6),
=125×6÷50,
=750÷50,
=15.