Exploring Unit Fractions in Pre-Algebra

What should you do with mixed numbers when adding or subtracting fractions?

• Leave them as mixed numbers

• Convert them to improper fractions

• Ignore them

• Convert them to decimals

When adding fractions, what must be the same for both fractions?

• Denominators

• Signs

• Numerators

• Whole numbers

In the example given, what is the common denominator for the fractions -13/3 and 42/5?

• 15

• 10

• 5

• 3

What is the result of adding -13/3 and 42/5 after finding the common denominator?

• 65/15

• 13/5

• 126/15

• 61/15

When multiplying fractions, what should you do if the fractions are already proper?

• Convert them to mixed numbers

• Leave them as they are

• Convert them to decimals

• Convert them to improper fractions

What is the result of multiplying 11/5 by -13/11 after simplifying?

• -11/5

• 13/5

• -13/5

• 11/5

What is the first step in dividing fractions?

• Find a common denominator

• Convert to mixed numbers

• Add the fractions

• Change to improper fractions

What is the reciprocal of 8/15?

• 1/15

• 15/8

• 8/15

• 1/8

What is the result of dividing -15/8 by -10/3 after multiplying by the reciprocal?

• 8/15

• 16/9

• 9/16

• 15/8

What is the result of simplifying -51/8?

• -51/8

• 51/8

• 18/5

• -18/5