Knowledge atom
Compare two-digit numbers by the tens digit
Decides which of two numbers is greater when the tens digits differ.
Start practiceProgress & proof summary
LifecycleNot started
Evidence progress0 of 2 pieces collected
0%Current predictionNo prediction yet
Why?Next reviewNot scheduled
Mastery projection: Not available yetWhat does this mean?
Standards alignment
1.NBT.B.3
Prerequisites
Common misconceptions
- compares by the larger single digit anywhere in the number (thinks 48 > 62 because 8 > 6 or 2)
Required evidence
These evidence lanes define what would count toward this atom.
EvidencePerformanceStatusNext step
Show the stepsCarry out the procedure accurately Not startedCollect one observation
Explain the ideaDescribe why the response works Not startedCollect one observation
Recent evidence
No evidence recorded yet
The first response record for this atom will appear here.