estimate the sum or difference with fractions
2 3/5- 1 3/8
2 1/2 = 1 1/2 = 1
2 3/5 -1 3/8
2 2/3+3/4
To estimate the difference between 2 3/5 and 1 3/8, we can simply round each fraction to the nearest whole number and perform the subtraction.
First, let's convert 2 3/5 to an improper fraction:
2 * 5 = 10
10 + 3 = 13
13/5
Next, let's convert 1 3/8 to an improper fraction:
1 * 8 = 8
8 + 3 = 11
11/8
Now we can subtract the rounded fractions:
13/5 - 11/8
To subtract fractions with different denominators, we need to find a common denominator:
The common multiple of 5 and 8 is 40.
Now, we can rewrite the fractions with the common denominator:
(13/5) * (8/8) - (11/8) * (5/5)
= (104/40) - (55/40)
Now we can subtract the fractions:
104/40 - 55/40 = (104 - 55)/40
= 49/40
Therefore, the estimate of the difference between 2 3/5 and 1 3/8 is 49/40.