Add or subtract mentally a one-digit number or a multiple of 10 to or from any two-digit number; use practical and informal written methods to add and subtract two-digit numbers

KS2 Maths Invaders
** New tablet-friendly version added 14th February 2018. Please let me know if you have any problems - support@mathsframe.co.uk

Shoot the spaceship with the correct answer and dodge the incoming fire. A fun game to practise a wide range of key mathematical skills.

There are over a hundred carefully differentiated levels linked to objectives from the new maths curriculum. The game can be used to teach: Multiplication, Addition, Reading Numbers, Subtraction, Fractions of Numbers, Roman Numerals, Rounding Numbers, Division, Converting Fractions to Decimals, Converting Fractions to Percentages, Telling the Time in Words, Recognising Multiples, Factors, Prime, Square and Cube Numbers, and Simplifying Fractions. A full list of levels is below. This game is also available as an iOS and Android app.

Game availability:

Online in HTML5 format
KS2 Maths Invaders ?
Missing Symbols
Drag the symbols to the correct position to make the number sentence correct. Lots of levels to play. See if you can improve your score over time.

For more multiplication and division resources click here.

For more addition and subtraction resources click here.

This game is now part of the 'Calculations' collection, which includes the following 17 games and resources: Column Addition, Expanded Addition, Expanded Addition - Place Value Counters, Number Bonds(2), Addition - Digit Drag, Missing Symbols, Column Subtraction, Column Subtraction using Place Value Counters, Counting on to find difference on a beadstring, Multiplication Grid Method, Multiplication Written Method, Ratio and Scaling Numbers, Representing Multiplication, Division by Chunking Up, Division by Chunking Down, Formal Written Division - Round Up or Down?, Short Division Writen Formal Method.

The Calculations app is available on Google Play and the App Store.

Game availability:

Online in HTML5 format
Missing Symbols ?
Monty's Maths Wall - Tablet Version
Use the arrow keys to guide your brick and destroy the wall or if you are using a tablet, tap either side to direct your brick and both sides to make it fall faster.

A great game for practising a wide range of mathematical skills. Levels are based on objectives from the new maths curriculum from Year 1 to Year 6. Topics include: multiplication, addition, reading numbers, subtraction, fractions of numbers, Roman numerals, division, converting fractions to decimals and percentages and simplifying fractions.

You can choose to play a single level, a selection of levels, or choose all the objectives from a year group (within the same topic). There is a full list of levels below.

Game availability:

Online in HTML5 format
Monty's Maths Wall - Tablet Version ?
Addition - Crystal Crash
A fun game to practise mental addition skills. The game was designed to cover all the mental addition objectives in the new math curriculum. You can choose one objective, or choose all the objectives for a year group.

This game will work on any device in your browser.

Game availability:

Online in HTML5 format
Addition - Crystal Crash ?
Addition and Subtraction Dominoes
Answer addition and subtraction questions to arrange the dominoes in the correct order as quickly as possible. Lots of choice over level including; add and/or subtract within 20, 50, 100, using decimals or with negative numbers.

Game availability:

Online in HTML5 format
Addition and Subtraction Dominoes ?
Bubble Pop - Number Bonds
A great way to practise number bonds and mental addition. Levels include: number bonds to 10, 20, 50 and 100 as well as addition pairs with a total of up to 20, 50 or 100. Look at the target at the top of the screen and then aim your bubble to make that target.

As a teacher I know how important it is that children know their number bonds (pairs of numbers that add up to 10, 20, 50 or 100), and can add quickly mentally. Repetition is essential in learning number bonds. This game is designed to make the process fun.

Children have to aim their bubble to make a given sum. As they progress the levels get harder; they have less time, or less bubbles to shoot. Each correct answer is accompanied by an image to reinforce the number bond they have found.

This game will work directly in the browser of any device.

Game availability:

Online in HTML5 format
Bubble Pop - Number Bonds ?
Balancing Sums
An excellent tool for reinforcing an understanding of the role of the equals sign. Choose one objective, or many. You can choose all the objectives for a single year group (or multiple year groups). You can also choose to balance between different types of calculations (eg addition and multiplication).

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
Balancing Sums ?
Subtraction - Crystal Crash
The game was designed to cover all the mental subtraction objectives in the new maths curriculum. You can choose one objective, or choose all the objectives for a year group.

This game will work on any tablet or computer.

Game availability:

Online in HTML5 format
Subtraction - Crystal Crash ?
Counting on to find a difference - beadstrings
I designed this activity to help children to visualise small differences between 2-digit numbers by bridging through multiples of 10. It can also be used to explore links between addition and subtraction and to begin to find differences using a number line.

This game is now part of the 'Calculations' collection, which includes the following 17 games and resources: Column Addition, Expanded Addition, Expanded Addition - Place Value Counters, Number Bonds(2), Addition - Digit Drag, Missing Symbols, Column Subtraction, Column Subtraction using Place Value Counters, Counting on to find difference on a beadstring, Multiplication Grid Method, Multiplication Written Method, Ratio and Scaling Numbers, Representing Multiplication, Division by Chunking Up, Division by Chunking Down, Formal Written Division - Round Up or Down?, Short Division Writen Formal Method.

The Calculations app is available on Google Play (£1.25) and will be available in the App Store in July.

Game availability:

Online in HTML5 format
Counting on to find a difference - beadstrings ?
Add and Subtract on a Number Line
Add and subtract near multiples on a number line. Develop mental methods of addition and subtraction by adding and subtracting a multiple of 10 or 100, and then adjusting. For example add 29 by adding 30 and then subtracting 1.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
Add and Subtract on a Number Line ?
Number Bonds (2)
Designed to help children to visualise and understand number bonds to 20, 50 and 100. Numbers are represented on a number line and using base-ten blocks.

For more addition and subtraction resources click here.

This game is now part of the 'Calculations' collection, which includes the following 17 games and resources: Column Addition, Expanded Addition, Expanded Addition - Place Value Counters, Number Bonds(2), Addition - Digit Drag, Missing Symbols, Column Subtraction, Column Subtraction using Place Value Counters, Counting on to find difference on a beadstring, Multiplication Grid Method, Multiplication Written Method, Ratio and Scaling Numbers, Representing Multiplication, Division by Chunking Up, Division by Chunking Down, Formal Written Division - Round Up or Down?, Short Division Writen Formal Method.

The Calculations app is available on Google Play and the App Store.

Game availability:

Online in HTML5 format
Number Bonds (2) ?
Addition - Digit Drag
Drag the digits to make a given sum. Lots of choice over level. A great starter activity for discussions on place value, mental methods of calculations and problem solving.

Game availability:

Online in HTML5 format
Addition - Digit Drag ?
Number Bonds
Find pairs of numbers with a given total. Play against the clock.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
Number Bonds ?
Balance scales - add, move or remove a weight
Balance the scales by adding, moving or removing a weight. A great mental starter to develop addition and subtraction skills.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
Balance scales - add, move or remove a weight ?
Solve 1 Step Money Problems
Read and interpret a word problem involving addition or subtraction and then solve.

For more money resources click here.

For more resources involving word problems click here.

Game availability:

Online in HTML5 format
Solve 1 Step Money Problems ?
Sequences - Tablet Version
Updated November 2017. This version will work on any device.

Find the correct number in a sequence. Lots of choice over level, count forwards or back, count in whole numbers, multiples of 10, multiples of 100, decimals and fractions.

For more addition and subtraction resources click here.

For more resources involving fractions and decimals click here.

Game availability:

Online in HTML5 format
Sequences - Tablet Version ?
Balancing Scales g and kg
Add weights to either pan until they are balanced. Can be used to teach addition, subtraction, partitioning, and mass, as well as developing an understanding of the equals sign.

Choose from grams, whole kilograms or kilograms with either 1 or 2 decimal places.

For more addition and subtraction resources click here.

For more partitioning resources click here.

Game availability:

Online in HTML5 format
Balancing Scales g and kg ?
ITP Beadstring
I am remaking the ITPs so that they will work on all modern browsers and tablets. They will remain freely available to all without the need for a subscription.

This ITP simulates a 100-bead string. You can move all the beads to the right of the string and move individual or groups of beads to the left side of the string by clicking on selected beads. The controls also allow you to move 1 or 10 beads to the left or right of the string to show addition and subtraction. This ITP can be used to model different counting and calculation strategies.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
ITP Beadstring ?
ITP Difference
I am remaking the ITPs so that they will work on all modern browsers and tablets. They will remain freely available to all without the need for a subscription. This ITP allows you to compare two rows of beads and to analyse the calculations they can represent. It can be used to promote the language of addition and subtraction, particularly the interpretation of difference. The ITP operates as a series of animations which show how the rows of beads can be represented by two number lines and then as a single number line with the difference indicated by a ‘jump’.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
ITP Difference ?
ITP Number Facts
This ITP has been remade so that it will work in modern browsers. It will remain free to use.

This ITP displays up to 20 coloured counters and the corresponding addition sentence. The number of counters you select, appear on the screen in purple. Click on any counter to change its colour, the number sentence also changes. To hide and reveal the number sentence, click on the box with the question marks. You can replace a number in the number sentence with a question mark by clicking on the number, and drag counters around the screen to form groups. Addition can be changed to subtraction by clicking on the addition sign in the box. Counters can be dragged into the displayed box, which you can make opaque to hide the counters.
The ITP can be used to model addition by combining and counting, and subtraction by partitioning and taking away. The hide and reveal options allow you to pose questions with unknown numbers in different positions in the number sentence. Partitioning counters in different ways helps children to identify all sums and differences of numbers to 20.

For more addition and subtraction resources click here.

Game availability:

Online in HTML5 format
ITP Number Facts ?