Subtract from numbers up to 20 (bar model)
Subtract a single digit from a 2-digit number up to 20.
Subtract from numbers up to 20 (bar model)
Subtract a single digit from a 2-digit number up to 20.
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Subtract a single digit from a 2-digit number up to 20.
Subtract a single digit from a 2-digit number up to 20.