问题
解答题
脱式计算.
|
答案
500-100×3
=500-300,
=200;
(375+125)×4
=500×4,
=2000;
25×4×7
=100×7,
=700;
200÷4-21
=50-21,
=29.
脱式计算.
|
500-100×3
=500-300,
=200;
(375+125)×4
=500×4,
=2000;
25×4×7
=100×7,
=700;
200÷4-21
=50-21,
=29.