Convert Larger Units to Smaller Units
Write the supplied conversion factor with its units.
About 20 minutes, plus any extended practice
Open lesson 1Convert Measurements and Use Fractional Data
Convert larger to smaller units, calculate time, solve rectangle dimensions, and summarize line-plot measures.
Before you begin
- Use area and perimeter; add like-denominator fractions.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Calculate Elapsed Time Across Several Hours
Read the stated same-day start and finish.
About 20 minutes, plus any extended practice
Open lesson 2Find a Rectangle Dimension from Its Area
Divide the supplied area by the known side to find the missing side.
About 20 minutes, plus any extended practice
Open lesson 3Sum Fractional Measurements Including Repeats
Read the supplied repeated lengths.
About 20 minutes, plus any extended practice
Open lesson 4Review and transfer
After the lessons, try 4 new review cases and a practical task. Each answer has an explanation and a link back to the related lesson.
Open the unit reviewGuest answers are temporary. Keep your own paper or document; this unit does not certify completion or record a school grade.
Topic references
- Common Core State Standards, mathematics: 4.MD.A.1 — Convert larger to smaller units, calculate time, solve rectangle dimensions, and summarize line-plot measures.
- Common Core State Standards, mathematics: 4.MD.A.2 — Convert larger to smaller units, calculate time, solve rectangle dimensions, and summarize line-plot measures.
- Common Core State Standards, mathematics: 4.MD.A.3 — Convert larger to smaller units, calculate time, solve rectangle dimensions, and summarize line-plot measures.
- Common Core State Standards, mathematics: 4.MD.B.4 — Convert larger to smaller units, calculate time, solve rectangle dimensions, and summarize line-plot measures.
These references informed the topic selection. They do not certify complete standards alignment.