K.NBT.A.1 Worksheets: Teen Numbers
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K.NBT.A.1 (Number and Operations in Base Ten): Build numbers 11 to 19 as ten ones and some more ones.
About this standard
The names of teen numbers hide the ten (thirteen does not sound like ten and three), which is why this standard asks children to build them. A full ten-frame plus extra counters shows it clearly. Practice with Teen Numbers: 10 and Some More; first grade continues with tens and ones in Place Value: Tens and Ones.
