问题
解答题
选择合适的方法计算.
|
答案
(1)31×38+52×31,
=31×(38+52),
=31×90,
=2790;
(2)608×[÷84],
=608×[1092÷84],
=608×13,
=7904.
选择合适的方法计算.
|
(1)31×38+52×31,
=31×(38+52),
=31×90,
=2790;
(2)608×[÷84],
=608×[1092÷84],
=608×13,
=7904.