Maths · KS1 · Number Bonds
KS1 Number Bonds Practice for Years 1–2
Number bonds are reusable relationships between parts and a whole. Secure bonds reduce the need to count from one every time and help children see how addition and subtraction facts belong to the same fact family.
What to understand in this topic
- recognise pairs that combine to make a target total
- use a known bond to find a missing part
- connect an addition fact to related subtraction facts
- use bonds to bridge through 10 in mental calculation
A common point of confusion
Number bonds are not random pairs to memorise in isolation. If 7 + 3 = 10, then 3 + 7 = 10 and the related subtraction facts 10 − 7 = 3 and 10 − 3 = 7 come from the same relationship.
Try a quick example
Question: Which number completes the bond to 10: 6 + ? = 10?
Answer: 4
The whole is 10 and one part is 6, so the missing part is 4.
This is a fixed educational example on the page, not a customer result and not a live tutor response.
What a parent can try at home
Use ten counters or ten small objects. Hide some under a cup and leave the rest visible. Ask the child to work out how many are hidden, then swap the visible and hidden amounts.
How NexEdu practises this
NexEdu can rehearse missing-number and fact-family questions in a focused session. Concrete objects, ten frames and bead strings remain useful when a child needs to see the part-whole relationship.
NexEdu provides guided questions throughout the child’s available daily tutoring time. A hint can follow an incorrect answer, and two consecutive incorrect answers trigger a brief reteach before practice continues. Same-day topic progress can resume where the child left off.
Related learning
About the information on this page
The educational summary helps parents understand the maths topic and its place in the National Curriculum in England. Product statements describe practice features; they are not promises of a particular grade, score or rate of progress.