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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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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 4 numbers can be used in combinations or differences to make all numbers from 1 to 30?
Using only sums and differences, and not necessarily all four numbers, 1, 3, 9 and 27 will make all numbers from 0 to 40.
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 can you estimate sums or differences of decimals?
In the same way as you estimate them for whole numbers.
How do you estimate decimal sums and differences?
The basic idea is the same as when you estimate sums and differences of larger numbers (which may or may not be integers). You round the numbers to one or two decimal digits, then add them up.
How do yo round to estimate sums and differences in math?
One way is to do front end estimation!
What is estimate sums and differences for 0.721 plus 0.894?
0.7 + 0.9 = 1.6 0.7 - 0.9 = -0.2
What is an instance when you might want to find an estimate for fraction sums our differences rather than the exact answer?
When you do not require an exact answer but an approximation is sufficient.
Estimate the following sums or differences 1 4 5 - 3 9 10 - 6 1 7?
150 - 4000 - 600 = -4450
Estimating sums and differences?
xxx=2x
How are these terms alike differences sums quotients and products?
Alike is the same as Differences means subtractions Sums means additions Quotients means divisions Products means multiplications
How do you estimate mixed numbers sums?
you have to add
The thing combines multiplication with sums and differences?
distributive property
What number would you use to estimate to sums of 47 and 21?
68
How do you estimate sums with decimals?
I think you round it to the nearest whole number...
