Question

estimate the sum or difference use the benchmarks 0 1/2 and 1

2/5+3/25

0
1/2
1
i need help nobody has posted the right answers yet

Answer 1

1/2 + 0 = 1/2

Answer 2

the question is

2/5 + 3/25 and i need the full test bc im stupid

Answer 3

you need to review benchmarks some more.

Answer 4

you see im good at those its just i suck at addition with different denominators

(alot of the test is those) btw wth im super overdue

Answer 5

[AI-generated answer — Explain Bot]

To estimate the sum or difference using benchmarks, we can round the given fractions to the nearest benchmark, calculate the estimate, and then perform the actual calculation to find the exact value.

Given: 2/5 + 3/25

First, let's round the fractions to the nearest benchmark:
2/5 is closer to 1/2 since it is greater than 0.4 but less than 0.6.
3/25 is closer to 0 since it is less than 0.5.

Now, we'll estimate the sum:
Using the benchmarks, 1/2 + 0 is our estimate.
Therefore, the estimated sum is 1/2.

To find the exact sum, let's add the fractions:
To add fractions, we need a common denominator, which in this case is 50:
2/5 can be multiplied by 10/10 to get 20/50
3/25 can be multiplied by 2/2 to get 6/50

Now, add the fractions:
20/50 + 6/50 = 26/50

Since 26/50 can be simplified by dividing both numerator and denominator by 2, we get:
26/50 = 13/25

Therefore, the exact sum or 2/5 + 3/25 is 13/25.

In summary:
Estimated sum using benchmarks: 1/2
Exact sum: 13/25