1st Grade Common Core Addition within 100 Worksheets (1.NBT.4)
The attachment is a packet of five days of worksheets for first grade common core standard 1.NBT.4 Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, 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. Unlike most of the other worksheets, the main focus, of adding within 100 goes onto the back sheet with the addition in expladed form. They all contain place value review and word problems, including an area to write an equation.
The review concepts this week are:
1.OA.3- Apply properties of operations, in the form of adding three numbers, making ten with two of them and add on
1.OA.1- Use addition and subtraction within 20 to solve word problems.