问题
解答题
用简便方法计算
|
答案
①46.5×99+46.5
=46.5×(99+1)
=46.5×100
=4650;
②7.96+0.49-2.96.
=7.96-2.96+0.49
=5+0.49
=5.49.
用简便方法计算
|
①46.5×99+46.5
=46.5×(99+1)
=46.5×100
=4650;
②7.96+0.49-2.96.
=7.96-2.96+0.49
=5+0.49
=5.49.