问题
解答题
脱式计算.
|
答案
(1)(270+402)×7,
=672×7,
=4704;
(2)89+111×6,
=89+666,
=755;
(3)168÷8×3,
=21×3,
=63;
(4)75×(698-689),
=75×9,
=675.
脱式计算.
|
(1)(270+402)×7,
=672×7,
=4704;
(2)89+111×6,
=89+666,
=755;
(3)168÷8×3,
=21×3,
=63;
(4)75×(698-689),
=75×9,
=675.