The birthday card had a front cover measuring 15cm by 10cm what is area of piece of cardboard used to make it?
A: First I measured 10cm by 15cm and added it and it 25cm and that is how I got it
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http://www.educreations.com/lesson/view/my-area-problem/23103392/?s=Hto7kI&ref=link
Nice job trying to work out this problem Liz. When the word 'by' is used in a problem it means x/times/multiplied by. So instead of adding them try multiplying the length and width to get the area.
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