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以下2道题是YEAR7 Mathex 2011年的,我得出的答案自以为是对的,但是和标准答案不同。是我错了?还是标准答案错了?
1. What is the average of 27.3,16.8,29.4 and 11?
we added up all 4 numbers then divided by 4,so the average is 21.125
But the answer we were given is 189.33
2.A chicken farm sends 8400 eggs to market each day.They are packed in cartons of 96.How many cartons are sent in a week?
We did 8400 x 7then divided by 96,answer was 613.
but the answer we were given is 88.
求高人帮忙。 |
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