Round to the Nearest Ten Using Distance
Find the lower and upper tens around the supplied number.
About 15 minutes, plus any extended practice
Open lesson 1Round and Calculate with Place Value
Round to tens and hundreds, compute within 1000, and multiply tens.
Before you begin
- Read hundreds, tens, and ones; regroup addition and subtraction.
Choose by skill rather than age alone. Read with an adult when useful, revisit a lesson, or explore another grade.
Follow the lesson sequence
Round to the Nearest Hundred
Locate the lower and upper hundreds, compare distances, and choose the nearer.
About 15 minutes, plus any extended practice
Open lesson 2Check Exact Multi-Digit Calculations with an Estimate
Compute the supplied exact operation with place value.
About 20 minutes, plus any extended practice
Open lesson 3Multiply Tens as Groups of Ten
Rename the multiple of ten as tens.
About 15 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: 3.NBT.A.1 — Round to tens and hundreds, compute within 1000, and multiply tens.
- Common Core State Standards, mathematics: 3.NBT.A.2 — Round to tens and hundreds, compute within 1000, and multiply tens.
- Common Core State Standards, mathematics: 3.NBT.A.3 — Round to tens and hundreds, compute within 1000, and multiply tens.
These references informed the topic selection. They do not certify complete standards alignment.