脱式计算 48×(46-37) 36×3×8 213×3-39 685+68×9

脱式计算 48×(46-37) 36×3×8 213×3-39 685+68×9.
2025-03-10 18:36:09
推荐回答(1个)
回答1:

(1)48×(46-37),
=48×9,
=432;

(2)36×3×8,
=108×8,
=864;

(3)213×3-39,
=639-39,
=600;

(4)685+68×9,
=685+612,
=1297.