问题
解答题
|
答案
(1)525-124-76,
=525-(124+76),
=525-200,
=325;
(2)463+71+37+129,
=(463+37)+(71+129),
=500+200,
=700;
(3)25×7+74×7+7,
=(25+74+1)×7,
=100×7,
=700;
(4)64×125,
=8×(8×125),
=8×1000,
=8000;
(5)750÷25÷3,
=750÷(25×3),
=750÷75,
=10.