Dear all,
Look at the journal below:
Kim and Kavita used a calculator to find 8642 + 9328.
Kim's answer is 17 970.
Kavita's answer is 1897.
One of them had keyed in the numbers incorrectly.
How would you use estimation to check whose answer is more reasonable?
Click here to key in your answer.
Love you,
Mrs Mak
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