The teen numbers
Understand that the teen numbers (11–19) are composed of ten ones and some further ones (early place value)
Teaching approaches
Gakuva’s recommended starting approach is selected. You can still compare every option.
1 approach
Teen numbers are ten and some more. Fourteen is one ten and four ones, not just “a four.” We build the ten bundle first, then add the extra ones.
Spend about 10 minutes building teen numbers with one ten and leftover ones.
Learning resources
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This concept
Check understanding
- Compose 14 as a group of ten and four ones using objects
- Decompose 17 into 10 + 7 and record as an equation
- Explain that 13 is 'one ten and three ones'
“If your child has 14 building blocks, can they see it as one full tower of 10 and 4 left over — understanding 'teen' numbers as ten-and-some-more?”
Curriculum record
- Type
- Conceptual
- Subject
- Mathematics
- Domain
- Number Representation & Place Value
- Age range
- Ages 5–7
Standards