Number bonds to 9
PROCEDURALFind the number that makes 10 when added to a given number from 1 to 9 (number bonds to 10)
Mastery Evidence
- Given 7, respond '3' to make 10
- Use a ten-frame to find the complement to 10
- Record pairs that make 10 as equations (e.g. 6 + 4 = 10)
Assessment Prompt
“If [child] has 6 strawberries and needs 10 for a recipe, can they quickly tell you they need 4 more — without counting all the way up from 1?”
Curriculum Standards2 alignments
K.OA.4Common Core State Standards for MathematicsFor any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.
Maths/Y1/AS/2The national curriculum in EnglandRepresent and use number bonds and related subtraction facts within 20.
Prerequisites1
- Numbers up to 10 into pairshardAges 4—6
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- Numbers up to 10 into pairs hard
Making 10 is a specific application of decomposing numbers into pairs
- Addition as combining or putting together two hard
Decomposing numbers into pairs requires understanding addition as combining
- How Many in Total? hard
Understanding addition as combining groups requires knowing numbers represent quantities (cardinality)
- One-to-one counting hard
Cardinality principle builds on one-to-one correspondence — you must count correctly to know the last number tells 'how many'
Unlocks5
- Addition and subtraction within 20hardAges 6—7
- Showing Your WorkingsoftAges 5—6
- Number bondshardAges 5—6
- Fluent adding and subtracting within 10hardAges 6—7
- Adding Three Small NumberssoftAges 6—7