This file includes a variety of different worksheets for the CCSS 1.NBT.C.6.
Each worksheet has two pages. On the first page are directions and a title as well as 4 problems. The second page has an additional 4 problems.
These are the strategies included:
Subtracting multiples of 10 using a number line
Subtracting multiples of 10 using known facts
Subtracting multiples of 10 using place value blocks
Balancing subtraction sentences of multiples of 10
There is a total of 4 worksheets (one per strategy) each with 8 questions. I copy them front to back for an independent work activity. This could also be homework or morning work.