Previously, students learned to find sums of fractions with the same denominator and sums of tenths and hundredths. They added two or more tenths and hundredths, applying the commutative and associative properties along the way. This lesson prompts students to apply their understanding and skills to solve problems in context, and to practice finding sums of three or more tenths and hundredths (including mixed numbers).
- Find the sum of three or more tenths and hundredths, using the commutative and associative properties strategically.
- Let’s add tenths and hundredths again, more than two at a time.
- Gather a few coins of different thicknesses for display.
- Create six posters with an addition expression from the activity on each one.
|Activity 1||25 min|
|Activity 2||10 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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