# Stage 1, mathematics, Year A – Unit 04

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

In this unit, 'Smaller numbers can be found hiding in bigger numbers', students will learn to:

• 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.

### Syllabus focus and content groups

Representing whole numbers A – 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

Combining and separating quantities A – MAO-WM-01, MA1-CSQ-01

• Recognise and recall number bonds up to ten
• Use flexible strategies to solve addition and subtraction problems

## Syllabus

Syllabus outcomes and content descriptors from Mathematics K–10 Syllabus (2022) © NSW Education Standards Authority (NESA) for and on behalf of the Crown in right of the State of New South Wales, 2024.

Category:

• Combining and separating quantities
• Mathematics (2022)
• Representing whole numbers
• Stage 1
• Unit