Subtract Tens from a 2 Digit Number - 2nd Grade Math

In the first grade, students subtract a multiple of 10 from another multiple of 10. Building on it, we start off by with the subtraction of a multiple of 10 from a 2 digit number. 
Understanding of place value comes in handy, as this is the same as decreasing the amount of 10's in a number. Subtract Tens from a 2 Digit Number Worksheet has problems on subtracting using models (base 10 blocks) followed by problems involving direct subtraction.

Common Core Alignment

2.NBT.5Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.