➕ 4th Grade Math · Unit 6

Adding, Subtracting and Multiplying Fractions

18 short narrated lessons in 4 chapters, each with pictures, a quiz with a hint and a second try, and an explanation for every answer.

Standards: 4.NF.B.3 4.NF.B.4 4.MD.B.4

4th Grade Math · 9 units
  1. 1Place Value and Big Numbers
  2. 2Multiplicative Comparison and Factors
  3. 3Multiplying Multi-Digit Numbers
  4. 4Dividing Multi-Digit Numbers
  5. 5Fraction Equivalence and Comparison
  6. 6Adding, Subtracting and Multiplying Fractions
  7. 7Decimals
  8. 8Measurement
  9. 9Angles and Shapes
Picture from the lesson “Breaking Fractions Apart”
Breaking Fractions Apart
Picture from the lesson “Adding Same-Size Parts”
Adding Same-Size Parts
Picture from the lesson “Taking Away Same-Size Parts”
Taking Away Same-Size Parts

What your child will learn

Adding and subtracting fractions

  1. Breaking Fractions ApartBreak a fraction like three fifths into a sum of unit fractions, and into other sums.
  2. Adding Same-Size PartsAdd fractions with the same denominator by adding the numerators and keeping the denominator.
  3. Taking Away Same-Size PartsSubtract fractions with the same denominator by subtracting the numerators.
  4. Fraction Story ProblemsSolve word problems that add or subtract fractions of the same whole with like denominators.
  5. Adding and Subtracting Fractions Review ReviewReview adding and subtracting fractions with like denominators.

Mixed numbers

  1. More Than One WholeWrite a fraction greater than one as a mixed number and a mixed number as a fraction.
  2. Adding Mixed NumbersAdd mixed numbers with like denominators, regrouping when the fraction parts make more than one.
  3. Subtracting Mixed NumbersSubtract mixed numbers with like denominators, trading a whole for fraction parts when needed.
  4. Mixed Numbers Review ReviewReview mixed numbers and adding and subtracting them.

Multiplying fractions by whole numbers

  1. Jumping by Unit FractionsShow that a fraction like five fourths is five times one fourth.
  2. Whole Numbers Times FractionsMultiply a whole number by a fraction, like three times two fifths, by multiplying the numerator.
  3. Fraction Times StoriesSolve word problems that multiply a fraction by a whole number, like three friends each eating three eighths of a pizza.
  4. Fraction Multiplying Review ReviewReview multiplying a fraction by a whole number.

Line plots with fractions

  1. Making a Line PlotMake a line plot to show measurements in halves, fourths and eighths of a unit.
  2. Reading a Line PlotAnswer questions about a line plot, like how many measurements are longer than one half inch.
  3. Solving Problems With Line PlotsAdd and subtract fractions from a line plot to find the difference between the longest and shortest measurements.
  4. Line Plots Review ReviewReview making and using line plots with fraction measurements.
  5. Fraction Fun: Unit 6 TestShow what you learned in the whole unit (Adding and subtracting fractions, Mixed numbers, Multiplying fractions by whole numbers, Line plots with fractions) by answering mixed questions.

Try a question from this unit

From the lesson “Breaking Fractions Apart”

Which fraction is a unit fraction?

  • 3/4
  • 1/6
  • 5/5
  • 2/3
Show the answer

1/6. A unit fraction has a numerator of 1. Only 1/6 names just one equal part.

Hint kids see after a wrong try: “Look for a numerator of 1.”

Key words

  • unit fraction
  • decompose
  • like denominators
  • sum
  • difference
  • word problem
  • mixed number
  • improper fraction
  • regroup
  • multiple
  • multiply
  • fraction
  • line plot
  • data
← Fraction Equivalence and Comparison All 4th Grade Math units Decimals →

Try these lessons in Kids Shelf

Narrated lessons, pictures and quizzes for every grade from K to 8. Works offline.

Download on the App Store Get it on Google Play