To evaluate the expression 4 1/2 - 2 - 5 2/3, we need to convert all the mixed numbers to improper fractions.
4 1/2 = 9/2
5 2/3 = 17/3
Now we can subtract:
9/2 - 2 - 17/3
To simplify this expression, we need a common denominator. The least common multiple of 2 and 3 is 6.
Converting all fractions to have a denominator of 6:
(9/2)*(3/3) - (2)*(3/3) - (17/3)*(2/2)
27/6 - 6/6 - 34/6
Now subtract the fractions:
27/6 - 6/6 - 34/6 = (27 - 6 - 34)/6 = -13/6
The final answer is -13/6, which can also be written as -2 1/6.
So the correct answer is C) -2 1/6.
Evaluate 4 1/2−2−5 2/3
Responses
A
–3 1/6
B
12 1/6
C 2 1/6
D-4 1/6
9 answers
Evaluate this expression.
32 + (−72.1)
32 + (−72.1)
To evaluate the expression 32 + (-72.1), simply add the two numbers together.
32 + (-72.1) = -40.1
Therefore, the answer is -40.1.
32 + (-72.1) = -40.1
Therefore, the answer is -40.1.
Evaluate this expression.
42.86 − 23.42
42.86 − 23.42
To evaluate the expression 42.86 - 23.42, simply subtract the two numbers.
42.86 - 23.42 = 19.44
Therefore, the answer is 19.44.
42.86 - 23.42 = 19.44
Therefore, the answer is 19.44.
Determine the value of the expression –5.45 + 4.12 –8.66.
Responses
Responses
To determine the value of the expression –5.45 + 4.12 – 8.66, we need to add the three numbers together.
–5.45 + 4.12 – 8.66 = -5.45 + 4.12 - 8.66.
To add these numbers, combine the like terms:
-5.45 + 4.12 - 8.66 = (-5.45 + 4.12) - 8.66 = -1.33 - 8.66.
Now subtract:
-1.33 - 8.66 = -9.99.
Therefore, the value of the expression –5.45 + 4.12 – 8.66 is -9.99.
–5.45 + 4.12 – 8.66 = -5.45 + 4.12 - 8.66.
To add these numbers, combine the like terms:
-5.45 + 4.12 - 8.66 = (-5.45 + 4.12) - 8.66 = -1.33 - 8.66.
Now subtract:
-1.33 - 8.66 = -9.99.
Therefore, the value of the expression –5.45 + 4.12 – 8.66 is -9.99.
7 2/3+−5 1/4
To add the mixed numbers 7 2/3 and -5 1/4, we first need to convert them to improper fractions.
7 2/3 = (7 * 3 + 2)/3 = 23/3
-5 1/4 = (-5 * 4 + 1)/4 = -19/4
Now we can add the fractions:
23/3 + (-19/4)
To add fractions with different denominators, we need a common denominator. The least common multiple of 3 and 4 is 12.
Converting all fractions to have a denominator of 12:
(23/3)*(4/4) + (-19/4)*(3/3)
92/12 + (-57/12)
Now add the fractions:
92/12 + (-57/12) = (92 - 57)/12 = 35/12
The final answer is 35/12, which cannot be simplified any further.
7 2/3 = (7 * 3 + 2)/3 = 23/3
-5 1/4 = (-5 * 4 + 1)/4 = -19/4
Now we can add the fractions:
23/3 + (-19/4)
To add fractions with different denominators, we need a common denominator. The least common multiple of 3 and 4 is 12.
Converting all fractions to have a denominator of 12:
(23/3)*(4/4) + (-19/4)*(3/3)
92/12 + (-57/12)
Now add the fractions:
92/12 + (-57/12) = (92 - 57)/12 = 35/12
The final answer is 35/12, which cannot be simplified any further.
1 answer