4.39+(2.01-2.29)-0.99
问题描述:
4.39+(2.01-2.29)-0.99
(3.98-2.43)-(1.43-5.57)也是这类的题目
4.39+(2.01-2.29)-0.99
答
4.39+(2.01-2.29)-0.99
=4.39+2.01-2.29-0.99
=3.12
(3.98-2.43)-(1.43-5.57)
=3.98-2.43-1.43+5.57
=5.69