1. Estimate the number of peanuts in this jar.
2. A box contains some buttons. Four people estimate the number of buttons in the box. Their estimates were 169, 157, 146 and 143.
One of the estimates was ten out, one was four out, one was sixteen out and the other estimate was seven out.
How many buttons were in the box?
Topics: Starter  Estimating  Problem Solving
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Here a concise URL for a version of this page without the comments.
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Here is the URL which will take them to an interactive estimating activity.