Mathematics / Year 2 / Number and Algebra / Number and place value

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View on Australian Curriculum website Australian Curriculum, Assessment and Reporting Authority
Curriculum content descriptions

Solve simple addition and subtraction problems using a range of efficient mental and written strategies (ACMNA030)

Elaborations
  • becoming fluent with a range of mental strategies for addition and subtraction problems, such as commutativity for addition, building to 10, doubles, 10 facts and adding 10
  • modelling and representing simple additive situations using materials such as 10 frames, 20 frames and empty number lines
General capabilities
  • Literacy Literacy
  • Numeracy Numeracy
  • Critical and creative thinking Critical and creative thinking
ScOT terms

Mental arithmetic,  Subtraction,  Addition,  Written calculations

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20 direct matches to ACMNA030

Video

Numbers Count: Adding two numbers

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How many different ways can you think of to add two numbers to reach ten? Watch this video to learn them all!

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Interactive

Wishball: hundreds

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Test your understanding of place value with three-digit numbers. Start with a three-digit whole number such as 507. A spinner provides a randomly generated digit. Choose its place value and add it to (or subtract it from) your starting number. Work towards a given target number, say 539, using other digits. You can choose ...

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Video

The Mathscots: Visiting the Dog Groomer - Groomer Give Aways

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In this animated video, Prime and Poly are offered free shampoo samples when they visit the dog groomer. Can Abacus the cat help to work out how to share the samples equally when more dogs arrive? The mathematical focus is on understanding that multiplication and division problems can be modelled using equal groups, sets ...

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Text

The Mathscots: Level 2 Teaching Guide

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This teaching guide provides a range of associated activities for each of the Mathscots episodes at Year 2. The guide contains a summary of the mathematical focus in each episode, a range of scaffolded learning experiences for before, during and after viewing each video, activities for families at home, and sets of printable ...

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Video

The Mathscots: Sharing the Sausages

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In this animated video, Prime the puppy uses multiplication, division and subtraction to work out how many sausages are served at dinner. The mathematical focus is on representing array problems with available materials and explaining reasoning; visualising a group of objects as a unit and using this to calculate the number ...

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Video

The Mathscots: Dog Feeder Dilemma

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In this animated video, Prime’s new dog feeder is not working as it should. Can Abacus help Prime get the food she needs? The mathematical focus is on multiplication facts for twos using doubling; modelling and representing simple additive and multiplicative situations and problem solving. The video includes a full transcript ...

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Video

The Mathscots: Knit 1, Purr 1

  • TLF-IDA004823

In this animated video, Abacus the cat keeps a count of the hats, scarves and leg warmers that Ada and Al knit for the Mathscots. The mathematical focus is on counting by 1s and skip counting by 2s and 4s, choosing procedures for efficiency; using facts of 10, additive thinking and place value concepts; noticing, observing ...

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Text

Salute - Calculate

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This game gives students opportunities to practise addition and subtraction strategies and develop algebraic thinking by finding unknown values in additive equations.

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Text

Make 10 - Calculate

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This game challenges students to choose pairs of cards that sum to ten. The game develops students' skills of addition and subtraction, creating simple equations and using mathematical language to describe their thinking processes.

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Text

Duck in a Bucket - Calculate

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In this game for pairs or teams, students practise addition and subtraction of small numbers, using multiple strategies.

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Text

Pattern & Algebra Year 2 - Calculate

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The focus of this activity is to discover if students can use numbers to describe a pattern that it written as a description. From here we are interested in finding out if students can interpret the pattern, discover the rule and apply this rule to find missing or future terms.

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Odd & Even Year 1 & 2 - Calculate

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In this lesson students investigate odd and even numbers.

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Text

Addition and Subtraction - Calculate

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This game focuses on addition, subtraction and estimation. It can be played many times as the totals will often be different and the focus of the mathematics can change. There is a video included to help with how to play the game.

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Text

Work sample Year 2 Mathematics: Trick or treat

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This work sample demonstrates evidence of student learning in relation to aspects of the achievement standards for Year 2 Mathematics. The primary purpose for the work sample is to demonstrate the standard, so the focus is on what is evident in the sample not how it was created. The sample is an authentic representation ...

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Online

Mathematical modelling: Year 2 – planning tool

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This planning resource for Year 2 is for the topic of Mathematical modelling. Students use mathematical modelling to solve practical problems involving additive and multiplicative situations, including money transactions; represent situations and choose calculation strategies; interpret and communicate solutions in terms ...

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Online

Multiplication and division: Year 2 – planning tool

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This planning resource for Year 2 is for the topic of Multiplication and division. Students begin to explore multiplication and realise that it can be represented in many ways.

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Online

Addition and subtraction: Year 2 – planning tool

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This planning resource for Year 2 is for the topic of Addition and subtraction. Students explore and test a range of computation strategies to solve additive situations – situations involving addition and subtraction.

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Interactive

Piñata Party Tens (2-digit place value)

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As a team, use your knowledge of tens and ones place values to help the goats release the treats from the piñata and have the GOAT party! Mathematical ideas and strategies this game supports: - Increasing and decreasing the value of 2-digit numbers. - Identifying the value of a digit based on its position in a numeral. - ...

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Downloadable

Understanding Australian coins

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This lesson is about Australian coins, their features, and their value. During the lesson, students explore what Australian coins look like, their value and their purpose. They identify and describe the features and value of Australian coins and make simple calculations using coins.

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Online

Paying It Forward

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This resource is a cross-curricular suite of units for Years F-6. The units develop understanding of tax and superannuation while focusing on understanding civic values and the financial wellbeing of students. There are three units, one each for F-2, 3-4 and 5-6 classrooms. They include downloadable materials, links to ...

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