问题
解答题
脱式计算.
|
答案
(1)72+12×4-25,
=72+48-25,
=120-25,
=95;
(2)300÷(15×14-200),
=300÷(210-200),
=300÷10,
=30;
(3)7×84÷(42-28),
=7×84÷14,
=588÷14,
=42.
脱式计算.
|
(1)72+12×4-25,
=72+48-25,
=120-25,
=95;
(2)300÷(15×14-200),
=300÷(210-200),
=300÷10,
=30;
(3)7×84÷(42-28),
=7×84÷14,
=588÷14,
=42.