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4th Grade Math — Fractions
Adding Fractions with the Same Denominator
  • Learning objective: add two fractions that share a denominator
  • Rule: keep the denominator, add the numerators
  • Worked example: 2/5 + 1/5 = 3/5 — try it with a pizza diagram
  • Check for understanding: what is 3/8 + 2/8?
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4th Grade Math — Fractions
Practice Problems
1/6 + 2/6 = ?
4/10 + 3/10 = ?
2/7 + 2/7 + 1/7 = ?
Work with your table group, then we'll check answers together
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4th Grade Math — Fractions
Exit Ticket
On your card: solve 3/9 + 4/9 and show your work
Rate how confident you feel: high, medium, or low
Hand it in on your way out
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4th Grade Math — Fractions
What About Different Denominators?
Preview for tomorrow: we can't add 1/3 + 1/4 the same way — yet
We'll need to find a common denominator first
Today's rule only works when denominators already match
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4th Grade Math — Fractions
Word Problem Practice
Maria ate 2/8 of a pizza, Sam ate 3/8 — how much did they eat together?
A recipe needs 1/4 cup sugar plus another 1/4 cup — what's the total?
Draw a picture to check your answer
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4th Grade Math — Fractions
Today's Takeaways
Same denominator means we just add the top numbers
Always double check your answer makes sense (is it more than 1 whole?)
Tomorrow we tackle different denominators