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Why does it make sense to round a mixed number to the nearest whole number when estimating a sum or difference Could you round to the nearest one half instead?
Wiki User
∙ 9y ago
Some people find it easier to add or subtract whole numbers but yes, you could round to the nearest half.
Wiki User
∙ 9y ago
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Why might estimating 17 472 000 to the nearest thousands be helpful?
It is not in the least helpful because the number is already given to the nearest thousands. So estimating 17 472 000 to the nearest thousands to get the answer 17 472 000 seems totally and utterly pointless.
How do i estimate the value of 51 to the nearest whole number?
51 IS a whole number and so you do not need to do any estimating!
What is the estimated answer for 308?
308 is a single number and there is no indication as to how it was arrived at. So there is no possibility of improving on it by estimating.
What is the difference in what you have to do for rounding and estimating?
Estimating is just an educated guess. For example, if you have to solve the problem 102.17 plus 266.18, you would make an educated guess. An educated guess would be 100+ 270 which equals 370. When you are rounding, you will usually get instructions to round a certain number. It is knowing the exact value, but finding the nearest whole number. For example: Round to the nearest hundredth 4.6781 If you are rounding to the nearest hundredth, you are trying to round the number 8, since it is in the hundredths spot. To round 8, look at 1. Is it greater than 5? If the number is greater than 5, round the number up by 1. If the number is smaller than 5, the number remains the same.
How do you Estimate size to the nearest power of ten?
If you are estimating the size of a number, it's a matter of counting zeroes. If you are estimating the size of something else, such as the size of your backyard, you're going to have to take some kind of measurement.
How are estimating and rounding different?
Estimating is a guess that should be close to the answer. Round is rounding a number up to the nearest ten, hundred. Example $345.89 round to the nearest dollar is $345.
What does estimating sums mean?
It means to round a number to the nearest whole number, tens, hundreds, etc.
Why might estimating 17 472 000 to the nearest thousands be helpful?
It is not in the least helpful because the number is already given to the nearest thousands. So estimating 17 472 000 to the nearest thousands to get the answer 17 472 000 seems totally and utterly pointless.
How do i estimate the value of 51 to the nearest whole number?
51 IS a whole number and so you do not need to do any estimating!
What is the difference number of nearest ten of 725-361?
1086
What is the estimated answer for 308?
308 is a single number and there is no indication as to how it was arrived at. So there is no possibility of improving on it by estimating.
What is the difference in what you have to do for rounding and estimating?
Estimating is just an educated guess. For example, if you have to solve the problem 102.17 plus 266.18, you would make an educated guess. An educated guess would be 100+ 270 which equals 370. When you are rounding, you will usually get instructions to round a certain number. It is knowing the exact value, but finding the nearest whole number. For example: Round to the nearest hundredth 4.6781 If you are rounding to the nearest hundredth, you are trying to round the number 8, since it is in the hundredths spot. To round 8, look at 1. Is it greater than 5? If the number is greater than 5, round the number up by 1. If the number is smaller than 5, the number remains the same.
What is the estimate of 206?
As a whole number it would not need estimating, but it would probably be estimated to the nearest 10, which would round it to 210.
How do you Estimate size to the nearest power of ten?
If you are estimating the size of a number, it's a matter of counting zeroes. If you are estimating the size of something else, such as the size of your backyard, you're going to have to take some kind of measurement.
Estimating fractions to the nearest whole number?
If the fraction is less than half, round down. If the fraction is half or greater, round up.
What is the difference between rounding and estimating a number?
Rounding is a way of simplify an exact number to make it easier to understand or remember. For example, the population of a city might be 71,212. To nearest thousand, this number is 71,000 which may be close enough for your purposes. To nearest hundred, it is 71,200 which is more accurate. Estimating is educated guessing, based on experience, visual observations, or rough calculations or other information. I might estimate the population of a city by driving around in it, counting the houses, studying a city map , aerial photograph or telephone directory or considering other information.
What are the rules to Estimating products and quotients of mixed numbers?
Estimating sumsUse rounded numbers to estimate sums.Example 1Give an estimate for the sum of 19.61 and 5.07 by rounding to the nearest tenth.Round each number to the nearest tenth.Example 2Estimate the sum of 19.61 + 5.07 by rounding to the nearest whole number.Round each number to a whole number.Estimating differencesUse rounded numbers to estimate differences.Example 3Give an estimate for the difference of 12.356 - 5.281 by rounding to the nearest whole number.Round each number to the nearest whole number.Now subtract.So 12.356 - 5.281 ≈ 7.Estimating productsUse rounded numbers to estimate products.Example 4Estimate the product of 4.7 × 5.9 by rounding to the nearest whole number.Round each number to a whole number.So 4.7 × 5.9 ≈ 30.Again, in decimals, as in whole numbers, if both multipliers end in .5, or are halfway numbers, rounding one number up and one number down will give you a better estimate of the product.Example 5Estimate the product of 7.5 × 8.5 by rounding to the nearest whole number.You can also round the first number down and the second number up and get this estimate.In either case, your approximation will be closer than it would be if you rounded both numbers up, which is the standard rule.Estimating quotientsUse rounded numbers to estimate quotients.Example 6Estimate the quotient of 27.49 ÷ 3.12 by rounding to the nearest whole number.Round each number to the nearest whole number.
