问题
解答题
|
答案
①124+38+76+62,
=(124+76)+(38+62),
=200+100,
=300;
②222-56-44,
=222-(56+44),
=222-100,
=122;
③16×125,
=4×(4×25),
=4×100,
=400.
|
①124+38+76+62,
=(124+76)+(38+62),
=200+100,
=300;
②222-56-44,
=222-(56+44),
=222-100,
=122;
③16×125,
=4×(4×25),
=4×100,
=400.