# Mathematics – Stage 1 – Year B – Unit 40

This two-week unit develops student knowledge, understanding and skills to solve problems using critical and strategic thinking.

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.

Students are provided opportunities to:

• investigate time and duration problems using calendars and clocks
• solve addition and subtraction problems using objects, diagrams, images and models
• record answers to multiplication and division problems (including those with remainders) using drawings, words and numerals.

## Syllabus focus and content group

### Stage 1

#### Representing whole numbers A – MAO-WM-01, MA1-RWN-01, MA1-RWN-02

• Use counting sequences of ones with two-digit numbers and beyond
• Represent numbers on a line
• Represent the structure of groups of ten in whole numbers

#### Representing whole numbers B – MAO-WM-01, MA1-RWN-01, MA1-RWN-02

• Use counting sequences of ones and tens flexibly
• Form, regroup, and rename three-digit numbers

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

• Use flexible strategies to solve addition and subtraction problems

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

• Form multiples of ten when adding and subtracting two-digit numbers
• Use knowledge of equality to solve related problems

#### Forming groups A – MAO-WM-01, MA1-FG-01

• Model and use equal groups of objects to represent multiplication
• Recognise and represent division

#### Forming groups B – MAO-WM-01, MA1-FG-01

• Represent and explain multiplication as the combining of equal groups
• Represent multiplication and division problems

#### Geometric measure A – MAO-WM-01, MA1-GM-01

• Position: Follow directions to familiar locations

#### Non-spatial measure B – MAO-WM-01, MA1-NSM-01, MA1-NSM-02

• Time: Describe duration using units of time

#### Representing whole numbers A – MAO-WM-01, MA1-RWN-01, MA1-RWN-02

• Use counting sequences of ones with two-digit numbers and beyond
• Represent numbers on a line
• Represent the structure of groups of ten in whole numbers

#### Representing whole numbers B – MAO-WM-01, MA1-RWN-01, MA1-RWN-02

• Use counting sequences of ones and tens flexibly
• Form, regroup, and rename three-digit numbers

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

• Use flexible strategies to solve addition and subtraction problems

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

• Form multiples of ten when adding and subtracting two-digit numbers
• Use knowledge of equality to solve related problems

#### Forming groups A – MAO-WM-01, MA1-FG-01

• Model and use equal groups of objects to represent multiplication
• Recognise and represent division

#### Forming groups B – MAO-WM-01, MA1-FG-01

• Represent and explain multiplication as the combining of equal groups
• Represent multiplication and division problems

#### Geometric measure A – MAO-WM-01, MA1-GM-01

• Position: Follow directions to familiar locations

#### Non-spatial measure B – MAO-WM-01, MA1-NSM-01, MA1-NSM-02

• Time: Describe duration using units of time