Subtracting 10s using place value
cc-2nd-add-subtract-100--cc-2nd-sub-ones-tens--understanding-place-value-when-subtracting-tens
Add and subtract within 100
Visually subtract within 100
Sal subtracts 40 from 65 by thinking about place value.
Sal subtracts 40 from 65 by thinking about place value.