Adding and Subtracting Within 20
Aligned To Common Core Standard:
Grade 1 Operations- OA.6
- Sums and Differences Under 20 : Step-by-step
Lesson- Use sums and differences in short word based format.
- Add or Subtract Pictures Practice
5 Pack- Visuals really help this one sink in well.
- 9 Problem Set Guided Lesson
- Use the sentence based work and convert it to functional numbers.
- Detailed Guided Lesson Explanation
- I really work through each step for you in high detail to insure
you understand it.
- Word Problem Form Practice
Worksheet - All addition and subtraction takes place in the
form of word problems. There is plenty of space to work it out.
- Matching Problems to Answers Worksheet - This is a little bit more advanced. You add and subtract 2 sets or 3 sets of digits.
View Answer Keys- All the answer keys in one file.
The prompts used here could come from a variety of means.
- Guided Lesson 1 - We ask you to think deep and that teachers accept endless possible answers.
- Guided Lesson 2 - More endless answers for you.
- Step-by-step Lesson - Name the equation at work.
- Subtraction within 20 Lesson 2 - Flower it up with the correct difference.
These will include all forms of data because you see that on National exams.
- Addition within 20- Time to break the boxes back out.
- Box Operations Practice- Remind students that both addition and subtraction are going on here.
- Matching Worksheet - Time to match up the differences.
- Within 20 Quick Explanation- This can also be seen as a quiz.
- Solving Visual Problems Worksheet - The boxes replace integers.