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Once can roughly round to tens if the numbers are less than 1000, or to hundreds if the numbers are less than 10000, etc., trying to make up for large round-off errors which occur when the number are close to 1/2 the round-off amount.
E.G Add: 13+ 57+ 49 + 45 + 78 + 105
Add 10 + 60 +50 + 50 + 80 + 100
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Earn +20 ptsQ: How do you estimate sums and differences?
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How do yo round to estimate sums and differences in math?
One way is to do front end estimation!
Estimating sums and differences?
xxx=2x
The thing combines multiplication with sums and differences?
distributive property
What does reasonable mean in the terms of maths?
To give a reason to something,(numbers, sums, differences, or problems you usle hear the word reasonablein a map scale problem like me
How is the mean calculated?
Add all the sums, then divide by the number of sums. (ie. the average.)
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