问题
解答题
脱式计算.
900-24×5
360-200÷4
25×4×9
(54+36)÷3.
答案
(1)900-24×5,
=900-120,
=780;
(2)360-200÷4,
=360-50,
=310;
(3)25×4×9,
=100×9,
=900;
(4)(54+36)÷3,
=90÷3,
=30.
脱式计算.
900-24×5
360-200÷4
25×4×9
(54+36)÷3.
(1)900-24×5,
=900-120,
=780;
(2)360-200÷4,
=360-50,
=310;
(3)25×4×9,
=100×9,
=900;
(4)(54+36)÷3,
=90÷3,
=30.