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Earn +20 ptsQ: Do you have to estimate before adding?
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Describe why estimating a sum or difference before adding or subtracting is useful?
If your calculations result in figure that is very different from your estimate then you know there has been a mistake: either in your estimate or your calculation. It means that you do not blindly continue with an incorrect answer.
What did you learn from adding and subtracting fractions?
I learned to always change the denominators before adding or subtracting the numerators. You must always have a common denominator before adding or subtracting.
What is estimate of 2314 671?
If you're adding those, you can see clearly that the actual answer is 2985 but if you have to, estimate 2300 + 670 = 2970
Do you estimate before the problem or after?
you must estimate before a problem then you can find out your real answer a compare
The r in occur is doubled before adding -ence?
It is!
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