Marks

2010-02-16 8:46 pm

1000-400+500=?

40000-1000+1000-4000=?

回答 (3)

2010-02-16 8:58 pm

✔ 最佳答案

1000 - 400 + 500
= 1000 + 100
= 1100

40000 - 1000 + 1000 - 4000
= 40000 - 4000
= 36000

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2010-02-16 10:40 pm

1) 1000-400+500

=1000(-400+500)

=1000+100

=1100

2) 40000-1000+1000-4000

=40000(-1000+1000)-4000

=40000-4000

=36000

希望幫倒你啦(:

參考: myself

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2010-02-16 8:57 pm

1000-400+500=1100
40000-1000+1000-400=36000

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