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Composing & Decomposing Numbers (110)
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 How to break apart numbers up to 10.
 How to combine numbers together to make greater numbers!
 How we can use this knowledge to help us share dragon fruit, decorate a gingerbread house, and even make groovy artwork!

Discussion Questions

Before Video(Hold up 5 fingers.) How many fingers am I holding up?ANSWER

5.

5.
ANSWER
I counted all of the fingers: 1, 2, 3, 4, 5.
ANSWER
7. I counted all the fingers: 1, 2, 3, 4, 5, 6, 7.

7. I counted all the fingers: 1, 2, 3, 4, 5, 6, 7.


After VideoThere are 8 dragon fruits. Gavin has 5. How many does Amiyah have?ANSWER

5 and 3 make 8, so Amiyah has 3 dragon fruit.

The parts and the whole.
What part is missing from this number bond? How do you know?
ANSWER
5. 4 and 5 make 9.

3 and 7 make 10, so 10 is the missing number.

2 and 4 make 6.



Vocabulary

Decomposing numbers
DEFINE
Breaking a number into two smaller parts.

Composing numbers
DEFINE
Combining two parts of a whole.

Number Bond
DEFINE
A diagram that shows a whole and two parts.

Total
DEFINE
The result of counting.

Count
DEFINE
The find how many items in a group.

Numbers
DEFINE
Symbols used to represent how many.

Decomposing numbers
DEFINE

Reading Material
Download as PDF Download PDF View as Separate PageWHAT ARE COMPOSING & DECOMPOSING NUMBERS (110)?You will learn that whole numbers can be put together to compose a greater number. Whole numbers can also be broken apart to decompose into two lesser numbers!
To better understand composing & decomposing numbers…
WHAT ARE COMPOSING & DECOMPOSING NUMBERS (110)?. You will learn that whole numbers can be put together to compose a greater number. Whole numbers can also be broken apart to decompose into two lesser numbers! To better understand composing & decomposing numbers…LET’S BREAK IT DOWN!
Decompose a number
Decomposing a number means taking a whole number and breaking it into two smaller parts. To decompose the number 5, you can break it into smaller parts of 4 and 1, or 3 and 2.
Decompose a number Decomposing a number means taking a whole number and breaking it into two smaller parts. To decompose the number 5, you can break it into smaller parts of 4 and 1, or 3 and 2.Use a number bond to show parts.
A number bond is a tool you can use to show parts of a whole. A number bond has one circle on top and two circles on the bottom. The top number shows the whole. The bottom numbers show the parts.
Use a number bond to show parts. A number bond is a tool you can use to show parts of a whole. A number bond has one circle on top and two circles on the bottom. The top number shows the whole. The bottom numbers show the parts.Decompose 8 using a number bond.
To show 8 in a number bond, put 8 in the top circle. Then the parts go in the lower circles. 2 and 6 make 8. 2 and 6 can go in the lower circles.
Decompose 8 using a number bond. To show 8 in a number bond, put 8 in the top circle. Then the parts go in the lower circles. 2 and 6 make 8. 2 and 6 can go in the lower circles.Compose a number.
Composing a number means taking two lesser numbers and combining them to make a greater whole number. A group of 4 and a group of 2 make 6.
Compose a number. Composing a number means taking two lesser numbers and combining them to make a greater whole number. A group of 4 and a group of 2 make 6.Compose 9 using a number bond.
9 goes in the top circle. 6 and 3 make 9 so the numbers 6 and 3 can go in the lower circles. You can say 6 and 3 make 9 OR 3 and 6 make 9.
Compose 9 using a number bond. 9 goes in the top circle. 6 and 3 make 9 so the numbers 6 and 3 can go in the lower circles. You can say 6 and 3 make 9 OR 3 and 6 make 9. 
Practice Word Problems

Practice Number Problems

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Science & Math$_{/yr}

Science Only$_{/yr}
Draw circles to show 8 in two groups.
Complete a number bond for 10.
Complete a number bond for 9.
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