Distinguish Times as Many from More
Identify whether the supplied comparison gives a multiplier or an added difference.
About 20 minutes, plus any extended practice
Open lesson 1Compare Multiplicatively and Investigate Factors
Distinguish times-as-many from more, find factors, classify primes, and explain patterns.
Before you begin
- Multiply and divide within one hundred.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Find Factor Pairs and Their Partners
Check the supplied factor by division and calculate its partner.
About 20 minutes, plus any extended practice
Open lesson 2Classify Prime, Composite, and One
List the target’s positive factor pairs or identify a nontrivial pair.
About 20 minutes, plus any extended practice
Open lesson 3Generate a Pattern and Explain a Feature
Apply the supplied rule for every step and record the terms.
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.OA.A.1 — Distinguish times-as-many from more, find factors, classify primes, and explain patterns.
- Common Core State Standards, mathematics: 4.OA.A.2 — Distinguish times-as-many from more, find factors, classify primes, and explain patterns.
- Common Core State Standards, mathematics: 4.OA.B.4 — Distinguish times-as-many from more, find factors, classify primes, and explain patterns.
- Common Core State Standards, mathematics: 4.OA.C.5 — Distinguish times-as-many from more, find factors, classify primes, and explain patterns.
These references informed the topic selection. They do not certify complete standards alignment.