# Mathematics – Multi-age – Year A – Unit 4

Smaller numbers can be found hiding in bigger numbers – this unit provides opportunities to further develop student knowledge, understanding and skills of combinations of numbers that add up to a given number.

Mathematics K-2 Syllabus © 2021 NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales.

In this unit students will learn to:

• count out a given number of objects from a larger collection
• represent numbers as quantities using objects and numbers
• create, model and recognise number combinations for numbers up to 10
• count on from the largest number to find the total of 2 numbers
• recognise and recall different combinations of 2 numbers that add up to a given number
• identify patterns to find all combinations for a given number
• use the bar model to represent parts of a number
• identify and combine numbers which make doubles facts
• describe combinations for numbers using words such as ‘more than’, and ‘less than’, and ‘double’
• find smaller numbers inside larger numbers
• identify near doubles by doubling the smaller number and adding one more or doubling the larger number and subtracting one less
• recognise and record numbers in different representations including words, numerals and known structures such as dice, rekenreks and ten-frames.

### Early Stage 1

##### Representing whole numbers – MAO-WM-01, MAE-RWN-01, MAE-RWN-02
• Instantly name the number of objects within small collections
• Use the counting sequence of ones flexibly
• Recognise number patterns
• Connect counting and numerals to quantities
##### Combining and separating quantities– MAO-WM-01, MAE-CSQ-01, MAE-CSQ-02
• Model additive relations and compare quantities
• Identify part–whole relationships in numbers up to 10

### Stage 1

##### Representing whole numbers – MAO-WM-01, MA1-RWN-01, MA1-RWN-02
• Use counting sequences of ones with two-digit numbers and beyond
• Continue and create number patterns
• Represent numbers on a line
• Represent the structure of groups of ten in whole numbers