5th grade unlike denominators videos

Grades 3–5 (ages 8–11) · 26 videos · Checked and refreshed daily

Quick answer

In 5th grade (ages 10–11), children add and subtract fractions and mixed numbers with unlike denominators by finding a common denominator. Start with Math Antics "Common Denominator LCD", then Math with Mr. J step-by-step lessons and word problems. Play all on repeat, or use Repeat one on the lesson your child needs.

Play all on repeat

Videos in this playlist

  1. 1Math Antics - Common Denominator ECDMath Antics - Common Denominator ECDmathanticsPlay from here Loop
  2. 2Math Antics - Common Denominator LCDMath Antics - Common Denominator LCDmathanticsPlay from here Loop
  3. 3Least Common Multiples | LCM | 5th Grade MathLeast Common Multiples | LCM | 5th Grade MathMath with Mr. JPlay from here Loop
  4. 4Math Antics - Adding and Subtracting FractionsMath Antics - Adding and Subtracting FractionsmathanticsPlay from here Loop
  5. 5Adding Fractions with Unlike Denominators | Math with Mr. JAdding Fractions with Unlike Denominators | Math with Mr. JMath with Mr. JPlay from here Loop
  6. 6Add Fractions with Unlike Denominators (How To) | 5th Grade MathAdd Fractions with Unlike Denominators (How To) | 5th Grade MathMath with Mr. JPlay from here Loop
  7. 7Adding Fractions with Unlike Denominators (Part 2) | Math with Mr. JAdding Fractions with Unlike Denominators (Part 2) | Math with Mr. JMath with Mr. JPlay from here Loop
  8. 8Subtract Fractions with Unlike Denominators (How To) | 5th Grade MathSubtract Fractions with Unlike Denominators (How To) | 5th Grade MathMath with Mr. JPlay from here Loop
  9. 9Subtracting Fractions with Unlike Denominators | Math with Mr. JSubtracting Fractions with Unlike Denominators | Math with Mr. JMath with Mr. JPlay from here Loop
  10. 10Subtracting Fractions with Unlike Denominators (Part 2) | Math with Mr. JSubtracting Fractions with Unlike Denominators (Part 2) | Math with Mr. JMath with Mr. JPlay from here Loop
  11. 11How to Add & Subtract Fractions with Unlike DenominatorsHow to Add & Subtract Fractions with Unlike DenominatorsMath with Mr. JPlay from here Loop
  12. 12Adding and Subtracting Fractions with Unlike Denominators | Math with Mr. JAdding and Subtracting Fractions with Unlike Denominators | Math with Mr. JMath with Mr. JPlay from here Loop
  13. 13How to Add Three Fractions with Unlike Denominators | Math with Mr. JHow to Add Three Fractions with Unlike Denominators | Math with Mr. JMath with Mr. JPlay from here Loop
  14. 14How to Add Fractions (Like and Unlike Denominators) | A Review of Adding Fractions | Math with Mr. JHow to Add Fractions (Like and Unlike Denominators) | A Review of Adding Fractions | Math with Mr. JMath with Mr. JPlay from here Loop
  15. 15How to Subtract Fractions (Like and Unlike Denominators) | A Quick Review | Math with Mr. JHow to Subtract Fractions (Like and Unlike Denominators) | A Quick Review | Math with Mr. JMath with Mr. JPlay from here Loop
  16. 16Math Antics - Adding Mixed NumbersMath Antics - Adding Mixed NumbersmathanticsPlay from here Loop
  17. 17Adding Mixed Numbers: A Step-By-Step Review | How to Add Mixed Numbers with Unlike DenominatorsAdding Mixed Numbers: A Step-By-Step Review | How to Add Mixed Numbers with Unlike DenominatorsMath with Mr. JPlay from here Loop
  18. 18Math Antics - Subtracting Mixed NumbersMath Antics - Subtracting Mixed NumbersmathanticsPlay from here Loop
  19. 19Subtracting Mixed Numbers (Step-By-Step) | How to Subtract Mixed Numbers with Unlike DenominatorsSubtracting Mixed Numbers (Step-By-Step) | How to Subtract Mixed Numbers with Unlike DenominatorsMath with Mr. JPlay from here Loop
  20. 20How to Subtract Fractions from Mixed Numbers | Math with Mr. JHow to Subtract Fractions from Mixed Numbers | Math with Mr. JMath with Mr. JPlay from here Loop
  21. 21Subtracting a Mixed Number from a Whole Number | Math with Mr. JSubtracting a Mixed Number from a Whole Number | Math with Mr. JMath with Mr. JPlay from here Loop
  22. 22Adding Fractions | Fraction Word Problems | Math with Mr. JAdding Fractions | Fraction Word Problems | Math with Mr. JMath with Mr. JPlay from here Loop
  23. 23Subtracting Fractions | Fraction Word Problems | Math with Mr. JSubtracting Fractions | Fraction Word Problems | Math with Mr. JMath with Mr. JPlay from here Loop
  24. 24Adding and Subtracting Fractions with Unlike Denominators!Adding and Subtracting Fractions with Unlike Denominators!Mashup MathPlay from here Loop
  25. 25Adding Fractions with Unlike Denominators | 5th Grade Math (Mastery Check)Adding Fractions with Unlike Denominators | 5th Grade Math (Mastery Check)Math with Mr. JPlay from here Loop
  26. 26Subtracting Fractions (Mastery Check) | 5th Grade MathSubtracting Fractions (Mastery Check) | 5th Grade MathMath with Mr. JPlay from here Loop

What does this unlike denominators unit cover?

It introduces common denominators and least common multiples, then adding and subtracting fractions like 2/3 + 1/4, mixed numbers and word problems. By the end a child should rewrite both fractions with a common denominator, add or subtract, and simplify the answer.

How does RepeatWatch help with fraction steps?

Put an A–B loop around the part where the common denominator is found and let it replay while your child works on paper. Slow it to 0.75× for a new step, save the adding, subtracting and mixed number parts on keys 1–9, and stop after a few loops.

Frequently asked questions

When do kids learn to add fractions with unlike denominators?

In the US, adding and subtracting fractions with like denominators comes in 4th grade, and unlike denominators in 5th grade (ages 10–11). Grade levels vary by country and school, so check your child's own class materials.

Should my child use the least common denominator?

Any common denominator works, and multiplying the two denominators always gives one. The least common denominator keeps numbers smaller and makes simplifying easier. The Math Antics videos show both methods, so a child can pick the one that makes sense.