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Math Grade 4-5 Answer Key

Mixed Numbers and Improper Fractions

Converting between whole-number fractions and mixed numbers

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Mixed Numbers and Improper Fractions

Converting between whole-number fractions and mixed numbers

Math - Grade 4-5

Instructions: Read each problem carefully. Show your work in the space provided.
  1. 1

    Write the improper fraction for the mixed number 2 1/3.

    Multiply the whole number by the denominator, then add the numerator.

    The improper fraction for 2 1/3 is 7/3. Two wholes equal 6/3, and 6/3 + 1/3 = 7/3.
  2. 2

    Write the mixed number for the improper fraction 9/4.

    The mixed number for 9/4 is 2 1/4. Four goes into nine two times with one left over.
  3. 3

    Change 3 2/5 into an improper fraction.

    First turn the whole number into fifths.

    The improper fraction for 3 2/5 is 17/5. Three wholes equal 15/5, and 15/5 + 2/5 = 17/5.
  4. 4

    Change 11/6 into a mixed number.

    The mixed number for 11/6 is 1 5/6. Six goes into eleven one time with five left over.
  5. 5

    Write the improper fraction for 4 3/8.

    Multiply 4 by 8, then add 3.

    The improper fraction for 4 3/8 is 35/8. Four wholes equal 32/8, and 32/8 + 3/8 = 35/8.
  6. 6

    Write the mixed number for 13/5.

    The mixed number for 13/5 is 2 3/5. Five goes into thirteen two times with three left over.
  7. 7

    Which is greater: 7/3 or 2 1/4?

    Turn 7/3 into a mixed number first.

    The fraction 7/3 is greater. It equals 2 1/3, and 2 1/3 is greater than 2 1/4.
  8. 8

    Draw or imagine fraction bars. Is 8/8 a mixed number, an improper fraction, or both?

    The fraction 8/8 is an improper fraction because the numerator is equal to the denominator. It is equal to 1 whole.
  9. 9

    Change 5 4/7 into an improper fraction.

    Find how many sevenths are in 5 wholes.

    The improper fraction for 5 4/7 is 39/7. Five wholes equal 35/7, and 35/7 + 4/7 = 39/7.
  10. 10

    Change 17/4 into a mixed number.

    The mixed number for 17/4 is 4 1/4. Four goes into seventeen four times with one left over.
  11. 11

    A baker used 2 1/2 cups of flour. Write this amount as an improper fraction.

    Change the 2 wholes into halves.

    The improper fraction for 2 1/2 is 5/2. Two wholes equal 4/2, and 4/2 + 1/2 = 5/2.
  12. 12

    Lena ran 15/6 miles. Write this distance as a mixed number.

    The mixed number for 15/6 is 2 3/6, which is also 2 1/2 when simplified. Six goes into fifteen two times with three left over.
  13. 13

    Explain how to change a mixed number into an improper fraction.

    Think about turning the whole number into equal fractional parts.

    To change a mixed number into an improper fraction, multiply the whole number by the denominator and add the numerator. Then write that sum over the same denominator.
  14. 14

    Explain how to change an improper fraction into a mixed number.

    To change an improper fraction into a mixed number, divide the numerator by the denominator. The quotient is the whole number, the remainder is the new numerator, and the denominator stays the same.
  15. 15

    Write a mixed number that is equal to 14/3.

    Use division to find the whole number part.

    A mixed number equal to 14/3 is 4 2/3. Three goes into fourteen four times with two left over.
LivePhysics.com Math - Grade 4-5 - Answer Key