Count back and count up
2nd Grade Math practice: Solve 15 - 12.. Part of subtraction within 100 (Subtraction within 100).
~9 min
For some problems, count back. For close numbers, count up.
Count back
Count back when you subtract a small number. Start at the first number and move back that many steps.
💡 Count back works well when the number you take away is small.