Number Bonds (Singapore Maths)
Number bonds are a Singapore Maths approach that shows how a number is made of two parts. For example, 7 is made of 3 and 4. Understanding number bonds builds strong mental maths foundations.
What You Need to Know
Number bonds are a Singapore Maths approach that shows how a number is made of two parts. For example, 7 is made of 3 and 4. Understanding number bonds builds strong mental maths foundations.
Key Concept Diagram
A number bond shows a whole number and its two parts: whole = part + part
For 10: bonds include 1+9, 2+8, 3+7, 4+6, 5+5
Number bonds help with quick mental addition and subtraction
The Singapore CPA approach: Concrete (objects) → Pictorial (pictures) → Abstract (numbers)
Key Vocabulary
number bond
A pair of numbers that add up to a given total
whole
The total — the number the two parts add up to
part
One of the two smaller numbers in a number bond
mental maths
Calculating in your head without writing it down
Knowledge Check
Select the correct answer for each question. Click "Check Answer" to see if you are right.
Question 1
What are the two parts that make 8 in this number bond: 8 = 3 + __?
Question 2
Complete the number bond: 10 = 6 + __
Question 3
Which number bonds for 5 are correct?
Question 4
If you know 7 = 4 + 3, which subtraction fact does this give you?
Question 5
Using number bonds, solve: 9 - __ = 5
Key Concepts Summary
- ●A number bond shows a whole number and its two parts: whole = part + part
- ●For 10: bonds include 1+9, 2+8, 3+7, 4+6, 5+5
- ●Number bonds help with quick mental addition and subtraction
- ●The Singapore CPA approach: Concrete (objects) → Pictorial (pictures) → Abstract (numbers)