Compose and decompose teen numbers 11-19 as ten ones and some further ones (K.NBT.A.1)
Exercise
Difficulty 3
~0 min
math.gK.s.ex_26
Decompose Teen Equation
Prompt
Fill in: 18 = 10 + ___
How it's presented
mode
fill blank
Answer criteria
type
numeric
value
8
Hints
- 18 is one ten and how many ones?
- Use the double ten-frame to check.
Misconceptions to watch
- Writes 18
- Writes 1 (the tens digit)
Used in lessons