Common Core
2.OA.B.2
7 lessons teach this standard. Every lesson is interactive, and every one prints as a worksheet with a separate answer key.
Grade 2 Math · Chapter 1 · Lesson 1
Two equal groups make a double.
Grade 2 Math · Chapter 1 · Lesson 2
If you know a double, you know its neighbors.
Grade 2 Math · Chapter 1 · Lesson 3
Get to ten first, then add what is left.
Grade 2 Math · Chapter 1 · Lesson 4
Break the teen number apart and subtract from the ten.
Grade 2 Math · Chapter 1 · Lesson 5
Addition and Subtraction Together
One fact family, four number sentences.
Grade 2 Math · Chapter 1 · Lesson 6
The unknown can sit anywhere in the sentence.
Grade 2 Math · Chapter 1 · Lesson 7
Look at the numbers before you start.