4.98-(2.98-0.69)这道题怎么简便计算?

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4.98-(2.98-0.69)这道题怎么简便计算?4.98-(2.98-0.69)这道题怎么简便计算?4.98-(2.98-0.69)这道题怎么简便计算?4.98-(2.98-0.69)=4.98-

4.98-(2.98-0.69)这道题怎么简便计算?
4.98-(2.98-0.69)这道题怎么简便计算?

4.98-(2.98-0.69)这道题怎么简便计算?
4.98-(2.98-0.69)
=4.98-2.98+0.69
=2+0.69
=2.69