Knowledge atom
Add a two-digit and a one-digit number composing a ten
Adds a single-digit number to a two-digit number when the ones exceed ten, forming a new ten.
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.C.4
Prerequisites
Common misconceptions
- writes 313 for 38 + 5 — records the ones sum without bundling
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
Represent itShow the idea with a model or notation Not startedCollect one observation
Recent evidence
No evidence recorded yet
The first response record for this atom will appear here.