## Decompose Numbers Less Than 10

#### Aligned To Common Core Standard:

**Kindergarten** - K.OA.3

How to Break a Number into Two Parts (Example: 8, 8 = 5 +3) - Breaking numbers into two separate numbers is not difficult at all. You just have to determine what makes the entire number altogether. The bigger the number the longer the process can take for an individual to determine the breaks. For example, if you have a number 12345, then it can be divided based on the number you see. Like, 1234 + 5, 1230 + 45, 1200 + 345, 1000 + 2345. This division is based on the number that are visible. The other way of determining how the number is to be broken into two parts is by dividing the number by 2. This will ensure that the number be divided into two equal parts such as: 28/2 = 14 | 14/2 = 7 | 100/2 = 50 Last but not the least, a number can be divided into two parts through random division of the number. Such as: 28 - 7 = 21 | 100 - 92 = 8. These worksheets and lessons help students learn that whole numbers can be the sum of multiple numbers with the goal of being to write addition sentences.

### Printable Worksheets And Lessons

- Decomposing Numbers Step-by-step
Lesson- Start with visual blocks than transition to actual digits.

- Decomposing Numbers Guided Lesson
- I covered the skill from top to bottom. These four problems sum
it all up for you.

- Decomposing Numbers Guided Lesson
Explanation-The explanation is a bit lengthy because students
sometimes get lost with this skill.

- Butterflies and Addition Sentences Worksheet - Color the butterflies based on the sum they are flying towards.
- What Does The Picture Say? (Addition Sentences) - I use friendly pictures to push forward on this skill. What problems do the pictures represent?

- Addition Sentence Match Worksheet - Note that there are multiple answers per box.
- Making the Number 10 Worksheet - In this case the top section is where you draw the box. The bottom section is where write the numbers that the boxes represent.

- Addition Sentence Equal to Model Worksheet- This is very challenging for students at this level. Proceed knowing that they might not have much success with it.
- Picture Addition Worksheet - A little picture addition to give them a jolt to their confidence.
- Addition Sentence Match Worksheet- Remember that there are multiple answers needed here.
- Composing and Decomposing Numbers Guided Lesson- You are asked to find the sum that makes a total of 8.
- Composing Numbers Worksheet- See if you can make these numbers from the pieces and parts that you are given.
- How to Make Numbers Guided Lesson- This is slight advanced for the skill level. More for your upper learners.
- Parts of Whole to Totals Numbers Step by Step Lesson- A perfect lead into to fractions.
- Putting Together Visuals in Sentences Lesson- You are given a model and need to find an equation that matches it.
- Your Own Addition Sentence Guided Lesson Explanation- Yes, this is guided but there are pretty much an infinite number of possible choices.