问题
解答题
用我喜欢的方法计算:
13-4.85-3.15
70.9-1.25-1.75.
答案
13-4.85-3.15,
=13-(4.85+3.15),
=13-8,
=5;
70.9-1.25-1.75,
=70.9-(1.25+1.75),
=70.9-3,
=67.9.
用我喜欢的方法计算:
13-4.85-3.15
70.9-1.25-1.75.
13-4.85-3.15,
=13-(4.85+3.15),
=13-8,
=5;
70.9-1.25-1.75,
=70.9-(1.25+1.75),
=70.9-3,
=67.9.