f.1 maths!!!

2006-12-11 2:14 am

1a.in the followingexpressions,round off the numbers correct to the nearest ten and estimate the values of the expressions
a)652+811+699-577

回答 (1)

2006-12-11 2:20 am

✔ 最佳答案

652+811+699-577
=650+810+700-580
=1580

參考: 自己

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