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Estimating sums and differences?
xxx=2x
How do you estimate sums and differences?
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
The thing combines multiplication with sums and differences?
distributive property
What is to different pairs of decimals whose sums are 14.1 one pair should involve regrouping on math?
The two different pairs of decimals whose sums are 14.1 and one pair involves regrouping on math are 8.4 and 5.7.
Explain how to use the associative properties of addition and multiplication to find sums mentally?
use mental math
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 can you estimate sums or differences of decimals?
In the same way as you estimate them for whole numbers.
How do you estimate sums with decimals?
I think you round it to the nearest whole number...
What does reasonableness mean in math?
It means to give the reason of something, (numbers,sums,differences, and problems.)
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 does Estimate sums front-end with adjustment mean?
it means round to the nearest 100 ten or 1s
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
What is the name of the math thing that does your sums for you?
calculator Your brain.
How do you estimate sums and differences?
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
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
