Knowledge atom
Mentally add 10 to a number within 1000
Adds ten to any three-digit number without counting, including when the tens digit rolls over.
Start practiceProgress & proof summary
LifecycleNot started
Evidence progress0 of 1 pieces collected
0%Current predictionNo prediction yet
Why?Next reviewNot scheduled
Mastery projection: Not available yetWhat does this mean?
Standards alignment
2.NBT.B.8
Prerequisites
Common misconceptions
- concatenates at rollover, writing 293 + 10 as 2103 (twenty tens and three ones written digit by digit)
- drops the hundred bump at rollover (293 + 10 = 203)
Required evidence
These evidence lanes define what would count toward this atom.
EvidencePerformanceStatusNext step
Recall itRetrieve the idea without a cue Not startedCollect one observation
Recent evidence
No evidence recorded yet
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