问题
解答题
用小数计算.
5元6角-2元9角
3元4角+8元8角
8角+9角
7分-5分.
答案
(1)5元6角-2元9角,
=5.6元-2.9元,
=2.7元;
(2)3元4角+8元8角,
=3.4元+8.8元,
=12.2元;
(3)8角+9角,
=0.8元+0.9元,
=1.7元;
(4)7分-5分,
=0.07元-0.05元,
=0.02元;
用小数计算.
5元6角-2元9角
3元4角+8元8角
8角+9角
7分-5分.
(1)5元6角-2元9角,
=5.6元-2.9元,
=2.7元;
(2)3元4角+8元8角,
=3.4元+8.8元,
=12.2元;
(3)8角+9角,
=0.8元+0.9元,
=1.7元;
(4)7分-5分,
=0.07元-0.05元,
=0.02元;