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Each game has 10 questions.

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Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level

The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.

Green box means correct.

Yellow box means incorrect.

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Year 2 - Number and Algebra

Standard 2.OA.1.1 - Write a subtraction sentence to represent the word problem with numbers up to 18.

Included Skills:

Number and place value

• Investigate number sequences, initially those increasing and decreasing by twos, threes, fives and tens from any starting point, then moving to other sequences

- developing fluency and confidence with numbers and calculations by saying number sequences

- recognising patterns in number sequences, such as adding 10 always results in the same final digit

• Recognise, model, represent and order numbers to at least 1000

- recognising there are different ways of representing numbers and identifying patterns going beyond 100

- developing fluency with writing numbers in meaningful contexts

• Group, partition and rearrange collections up to 1000 in hundreds, tens and ones to facilitate more efficient counting

- using an abacus to model and represent numbers

- understanding three-digit numbers as comprised of hundreds, tens and ones/units

- demonstrating and using models such as linking blocks, sticks in bundles, place-value blocks and Aboriginal bead strings and explaining reasoning

• Explore the connection between addition and subtraction

- becoming fluent with partitioning numbers to understand the connection between addition and subtraction

- using counting on to identify the missing element in an additive problem

• Solve simple addition and subtraction problems using a range of efficient mental and written strategies

- 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

• Recognise and represent multiplication as repeated addition, groups and arrays

- representing array problems with available materials and explaining reasoning

- visualising a group of objects as a unit and using this to calculate the number of objects in several identical groups

• Recognise and represent division as grouping into equal sets and solve simple problems using these representations

- dividing the class or a collection of objects into equal-sized groups

- identifying the difference between dividing a set of objects into three equal groups and dividing the same set of objects into groups of three

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