Combining and separating quantities A
Mathematics K–10 (2022) · Stage 1 · View this focus area on the NESA NSW Curriculum website ↗
Outcomes
MA1-CSQ-01 uses number bonds and the relationship between addition and subtraction to solve problems involving partitioningContent dot points
Each dot point has its own page with resources matched to it.
Use advanced count-by-one strategies to solve addition and subtraction problems
- Apply the terms ‘add’, ‘plus’, ‘equals’, ‘is equal to’, ‘is the same as’, ‘take away’, ‘minus’ and ‘the difference between’ to describe combining and separating quantities
- Recognise and use the symbols for plus (+), minus (–) and equals (=)
- Record number sentences in a variety of ways using drawings, words, numerals and symbols
- Fluently use advanced count-by-one strategies including counting on and counting back to solve addition and subtraction problems involving one- and two-digit numbers (Reasons about relations)
Recognise and recall number bonds up to ten
- Recognise, recall and record combinations of two numbers that add up or bond to form 10
- Model and record patterns for individual numbers up to ten by making all possible whole-number combinations (Reasons about patterns)
- Create, recall and recognise combinations of two numbers that add up to numbers less than 10
- Describe combinations for numbers using words such as more than, less than and double (Reasons about relations)
Use flexible strategies to solve addition and subtraction problems
- Use non-count-by-one strategies such as using doubles for near doubles and combining numbers that add to ten
- Represent addition and subtraction using structured materials such as a bead string or similar model
- Select and apply strategies using number bonds to solve addition and subtraction problems with one- and two-digit numbers by partitioning numbers using quantity value and bridging to 10 (Reasons about relations)
Represent equality
- Use the equals sign to record equivalent number sentences involving addition, and to mean 'is the same as', rather than as an indication to perform an operation (Reasons about relations)
- Model the commutative property for addition and apply it to aid the recall of addition facts (Reasons about relations)
- Recall related addition and subtraction facts for numbers to at least 10 (Reasons about relations)
Focus area resources
- Unit/PlanningAnnotated work samples – Stage 1, activity 1: combining and separating quantities
- Unit/PlanningAnnotated work samples – Stage 1, activity 2: combining and separating quantities
Stage 1 planning resources
Stage- or course-wide documents (scope and sequences, guides) that cover this focus area alongside others.
- Unit/PlanningMaking connections – Stage 1 (parallel content)
- Unit/PlanningSample scope and sequence – Stage 1