问题
解答题
|
答案
(1)25×8×2,
=200×2,
=400;
(2)50×50-500,
=2500-500,
=2000;
(3)70-2×18,
=70-36,
=34;
(4)140×2-180,
=280-180,
=100;
(5)0×78×78=0.
|
(1)25×8×2,
=200×2,
=400;
(2)50×50-500,
=2500-500,
=2000;
(3)70-2×18,
=70-36,
=34;
(4)140×2-180,
=280-180,
=100;
(5)0×78×78=0.