1st Grade Common Core Subtraction Worksheets 1.NBT.6
The attachment is a packet of five days of worksheets for first grade common core standard 1.NBT.6 Subtract multiples of 10 in the range 10 – 90 from multiples of 10 in the range 10 – 90 using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Each day has two worksheets, designed to be copied front and back. The front page focuses on the standard of the week and the back is a review of previous information. They all contain place value review and word problems, including an area to write an equation.
The review concepts this week are:
1.OA.1 Use addition and subtraction within 20 to solve word problems
1.NBT.4 Add within 100
1.OA.8 Determine the unknown whole number in an addition or subtraction equation