Worksheet settings
Worksheet preview
Number bond pairs
Practice worksheet
Fact family
Answer key
How to use number bonds
- Pick a whole, such as 10 or 20.
- Read each pair as two parts that make the whole.
- Use the missing-part worksheet for retrieval practice, then check the answer key.
Related math practice
Use the multiplication table generator for times-table practice, factor pairs when students reverse multiplication facts, and number line when the lesson needs a line model instead of a part-whole diagram.
FAQ
What are number bonds?
Number bonds show how a whole number can be split into two parts. For example, 10 can be 3 and 7, so 3 + 7 = 10.
What is a fact family?
A fact family is a set of related equations using the same numbers, such as two addition facts and two subtraction facts, or two multiplication facts and two division facts.
What grade level is this for?
Number bonds are commonly used in early elementary math, often around kindergarten through grade 2, but names and timing vary by country and curriculum.
How do I print the worksheet?
Choose the target, problem count, seed, and answer setting, then use Print / Save PDF. The printed view hides controls and keeps the worksheet and optional answer key.
Does this page save student progress?
No. The page does not ask for names, store profiles, or send worksheet answers to a server. The seed and shared URL only recreate the same worksheet settings.