Prior to this lesson, students learned to combine tenths and hundredths up to a sum of 1. In this lesson, they extend that work to include larger fractions and continue to build their ability to identify equivalent fractions that are helpful for finding sums.
They also encounter some equations involving unknown addends. While subtracting tenths and hundredths is not an expectation at this point, students can reason about the unknown addends by relying on their understanding of addition, their experience with decomposing a fraction into a sum, and their knowledge of equivalence.
- Use equivalent fractions to add tenths and hundredths, where the sum is greater than 1.
- Let’s add more tenths and hundredths.
Materials to Gather
Materials to Copy
- Fraction Action: Tenths, Hundredths
- Card Sort: Less Than, Equal to, or Greater Than 1
- Create a set of cards from the blackline master for each group of 2-4 students.
- Create a set of cards from the blackline master for each group of 2.
|Activity 1||20 min|
|Activity 2||15 min|
|Activity 3||20 min|
|Lesson Synthesis||10 min|
Teacher Reflection Questions
- Compare (1–5), Stage 6: Add and Subtract Fractions (Addressing)
- Rolling for Fractions (3–5), Stage 2: Multiply a Fraction by a Whole Number (Addressing)
- Compare (1–5), Stage 3: Multiply within 100 (Supporting)
Print Formatted Materials
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