I can compose and decompose numbers from 11 to 19 into ten ones and some further ones
Grade level problem 1 for K.NBT.1
Grade level problem 2 for K.NBT.1
Grade level problem 3 for K.NBT.1
Grade level problem 4 for K.NBT.1
Grade level problem 5 for K.NBT.1
Grade level problem 6 for K.NBT.1
Grade level problem 7 for K.NBT.1
Grade level problem 8 for K.NBT.1
Grade level problem 9 for K.NBT.1
Grade level problem 10 for K.NBT.1