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Zorluk: KolayFraction Addition and Subtraction in Context

Solve the following word problem and enter your final answer. You may use a mixed number, improper fraction, or decimal format.

Cevap:A Navy seaman is painting the exterior of a ship. He uses 3123 \frac{1}{2} gallons of gray paint on the port side and 2142 \frac{1}{4} gallons on the starboard side. In total, he used 【5 3/4】 gallons of paint.

Cevap

5 3/4
To find the total amount of paint used, the two quantities must be added together. By finding a common denominator of 4, the fraction 12\frac{1}{2} is converted to 24\frac{2}{4}. Adding the fractions 24\frac{2}{4} and 14\frac{1}{4} yields 34\frac{3}{4}. Adding the whole numbers 3 and 2 gives 5. The combined total is 5345 \frac{3}{4} gallons.

Adım Adım Çözüm

1
Set up the addition problem to combine the two quantities of paint.
312+2143 \frac{1}{2} + 2 \frac{1}{4}
The total amount of paint used is the sum of the paint used on both sides of the ship.
2
Find a common denominator for the fractional parts (2 and 4).
The least common multiple of 2 and 4 is 4.
Fractions must have the same denominator before they can be added together.
3
Convert the first fraction to an equivalent fraction with a denominator of 4.
312=3243 \frac{1}{2} = 3 \frac{2}{4}
This allows the fractional parts to be added seamlessly.
4
Add the whole numbers and the fractions.
Whole numbers: 3+2=53 + 2 = 5. Fractions: 24+14=34\frac{2}{4} + \frac{1}{4} = \frac{3}{4}. Final total: 5345 \frac{3}{4}.
Combining the separate sums gives the total value of the mixed numbers.

Anahtar Kavram

Adding mixed numbers with unlike denominators
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