Test: Fractions - SAT MCQ

To find 3/4 of 24, multiply 24 by 3/4:
24 × 3/4 = (24 × 3) ÷ 4 = 72 ÷ 4 = 18
Therefore, 3/4 of 24 is 18.

If a quarter of a cake is shared between 4 people, we need to find 1/4 divided by 4:
1/4 ÷ 4 = 1/4 × 1/4 = 1/16
Therefore, each person will receive 1/16 of the cake.

The reciprocal of a fraction is the fraction flipped upside down. The reciprocal of 1/3 is 3/1.

Concept:

1. Ascending means smallest to largest, 0 to 9, and/or A to Z

2. Descending means largest to smallest, 9 to 0, and/or Z to A

3. The value of a fraction can be compared by converting it into decimals.

Calculations:

⇒ 2/3 = 0.66

⇒ 3/4 = 0.75

⇒ 4/5 = 0.8

⇒ 5/6 = 0.83

∴ Smallest fraction = 2/3

If 2/3 of a pizza costs $8, we need to find the cost of 1/3 of the pizza:
2/3 = $8
1/3 = $8 ÷ 2 = $4
Therefore, the whole pizza costs $12.

To convert a fraction to a decimal, divide the numerator by the denominator:
5/8 = 0.625

To compare the fractions, find a common denominator and compare the numerators. The common denominator here is 180. Convert each fraction: 100/180 (A), 105/180 (B), 108/180 (C), 120/180 (D). The largest fraction is 2/3 (D).

To multiply fractions, multiply the numerators and then the denominators: (1 x 2) / (3 x 5) = 2/15 .

75% can be written as 75/100, which simplifies to 3/4 .

To subtract fractions, you need to have a common denominator. In this case, the common denominator for 7 and 9 is 63.

So, first, let's rewrite the fractions with the common denominator:

5/9 - 2/7

= (5/9)(7/7) - (2/7)(9/9) = 35/63 - 18/63

Now, subtract the numerators while keeping the common denominator:

= (35 - 18)/63 = 17/63

So, the result of subtracting 2/7 from 5/9 is 17/63.