1 less than (6)

1 less than (3)

1 less than within 10

Subtract 0 & 1 within 10

Subtract 1 within 10

Subtract 2 within 10

Use the counting backwards strategy to solve.

Remediate by making the equal sign to the right of every problem.

Create extensions by including multi-subtrahend problems, e.g.:

___ - 1 - 1 = 4