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3 March, 03:29

Writing to explain. Kevin wants to buy a new stereo for $ 239. so far, he has saved $115. Explain how you can use mental math to find out how many more money Kevin needs to save

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  1. 3 March, 04:03
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    You would estimate.

    So round 239 to 240, and 115 to 110.

    240 - 110 = $130

    No work out the difference from 239 to 240 ($1) and 115 to 110 ($5), and subtract those from the answer

    $130 - $5 - $1 = $124
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