Kindergarten Number Bonds: Number Bonds Within 5

Learn part-part-whole relationships with numbers to 5

What You'll Learn

Understand that numbers can be broken into parts
Find the missing part when given the whole and one part
Recognize all bonds within 5

📖What Are Number Bonds?

A number bond shows how a number can be split into two parts. For example, 5 can be split into 2 and 3. The number at the top is the "whole" and the numbers at the bottom are the "parts."

💡

Use your fingers to practice! Hold up 4 fingers and hide some. How many are hiding? That is the missing part!

Worked examples

Real problems from the practice worksheets, solved one step at a time.

Example 1
1 + ? = 5
1. A number bond joins two parts to make a whole. The whole is 5 and one part is 1.
2. To find the missing part, take the known part away from the whole: 5 − 1.
3. So the missing part is 4.
Answer: 4
Example 2
? + 1 = 3
1. A number bond joins two parts to make a whole. The whole is 3 and one part is 1.
2. To find the missing part, take the known part away from the whole: 3 − 1.
3. So the missing part is 2.
Answer: 2
Example 3
1 + 4 = ?
1. A number bond joins two parts to make a whole. Here the two parts are 1 and 4.
2. To find the whole, put the parts together: 1 + 4.
3. So the whole is 5.
Answer: 5