Quiz on Adding and Subtracting Unlike Fractions

What is the first step when adding or subtracting fractions with different denominators?

• Subtract the smaller denominator from the larger one

• Multiply the fractions

• Find a common denominator

• Add the numerators directly

If you have fractions 3/4 and 1/7, what is their common denominator?

• 35

• 28

• 21

• 14

When adding -3/10 to 5/6, what is the common denominator?

• 30

• 20

• 40

• 10

What is the result of adding 2 and 1/8 to -3 and 2/3?

• -1 and 11/24

• 1 and 11/24

• 1 and 13/24

• -1 and 13/24

How do you convert a mixed number to an improper fraction?

• Subtract the numerator from the whole number

• Add the whole number to the numerator

• Multiply the whole number by the denominator and add the numerator

• Multiply the numerator by the denominator

What is the common denominator for 9/16 and 5/8?

• 8

• 32

• 16

• 24

When subtracting mixed numbers, what might you need to do if the fractional part of the minuend is smaller than the subtrahend?

• Multiply the fractions

• Borrow from the whole number

• Add a whole number

• Subtract the numerators directly

In the problem where Yong jogged over three days, what is the total distance she jogged?

• 10 and 1/2 miles

• 11 and 1/2 miles

• 11 and 17/20 miles

• 12 miles

If Yong jogged 3 and 1/2 miles on the first day and 4 and 1/4 miles on the second day, how many miles did she jog on the third day?

• 4 and 1/10 miles

• 4 miles

• 3 and 1/4 miles

• 3 and 1/2 miles

What is the common denominator used to solve the problem of Yong's jogging distances?

• 4

• 10

• 30

• 20