问题
解答题
|
答案
(1)1.29+3.7+0.71+6.3
=(1.29+0.71)+(3.7+6.3),
=2+10,
=12;
(2)528×78+472×78
=(528+472)×78,
=1000×78,
=78000;
|
(1)1.29+3.7+0.71+6.3
=(1.29+0.71)+(3.7+6.3),
=2+10,
=12;
(2)528×78+472×78
=(528+472)×78,
=1000×78,
=78000;