Understanding Percentages

What is the first step in expressing one number as a percentage of another?

• Add the numbers together

• Multiply the numbers by 100

• Express the numbers as a fraction

• Convert the numbers to decimals

How do you simplify the fraction 15/25 before converting it to a percentage?

• Subtract 5 from both numerator and denominator

• Divide both numerator and denominator by 5

• Multiply both numerator and denominator by 2

• Add 10 to both numerator and denominator

What is the percentage of 15 out of 25?

• 50%

• 60%

• 70%

• 80%

When expressing 240 grams as a percentage of 320 grams, what is the resulting percentage?

• 80%

• 65%

• 75%

• 70%

Why is it unnecessary to consider units when calculating percentages?

• Units are only important in addition

• Units are irrelevant in mathematics

• Units cancel out in the fraction

• Units are always the same

How can you simplify the fraction 0.3/1.5 before converting it to a percentage?

• Add 1 to both

• Multiply both by 10

• Subtract 0.5 from both

• Divide both by 10

What is the percentage of 0.3 out of 1.5?

• 25%

• 30%

• 20%

• 15%

What is the first step when dealing with different units in percentage calculations?

• Add the units together

• Multiply the units by 100

• Convert all units to the same type

• Ignore the units

What is the percentage of 1.2 kilos out of 800 grams?

• 175%

• 100%

• 150%

• 125%

What happens to the percentage if the numerator is larger than the denominator?

• The percentage is negative

• The percentage is exactly 100

• The percentage is more than 100

• The percentage is less than 100