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SMASHMATHS - Greetings to Ms. Helen S and her international class from DECV! MASHMATHS - featured on Melbourne University's Bastow Institute's Leading Numeracy website - - Interactive Learning for the Australian Mathematics Curriculum

Addition and Subtraction     Year    1     2     3     4     5     6

Year 1 - Represent and solve simple addition and subtraction problems using a range of strategies including counting on, partitioning and rearranging parts. <back to top>

Number Line

Answer the problem and click the 'check' button. A bouncing dot will show you the answer on the number line.

Big Yellow Bus  New - HERE for MOBILE!

All the kids on the bus are on the wrong seats and it's a wild scene! The bus cannot make it to school in this condition. Re-arrange the kids so that they are in the right seats. However the seats have addition problems from 0-20, not seat numbers!

Trimathlon  New - HERE for MOBILE!

Practice your adding and subtracting skills with this triathlon challenge. Choose a country, select a sport and goodluck! Get as many questions correct as you can in a minute before you can go to the next level.

Addition Stories

Add the groups of objects together by counting as you drag them into the totals box.

Alien Pairs

Put all the pairs of numbers that add to 10 in the spaceship as quickly as you can. It's fast!

Balloon Pop Maths - Addition

Pop the balloons in order from the smallest sum to the largest sum. Number range up to 10.

Busy Bees

Subtraction word problems with pictures. How many bees are in the hive?

Count Hoot Addition and Subtraction

A drag and drop game where you count the spots of the ladybirds. Choose addition, subtraction or mixed addition and subtraction sums.

Fantastic Fish Shop

Choose the fish by clicking the aquarium with the correct answer to the subtraction problem. 'Easy' or 'Medium' to 10. 'Hard' for subtraction to 20.

Feed Fribbit Addition

Fribbit is a hungry frog. Click on the flies that will complete the addition problem correctly. Two levels.

Feed Fribbit Subtraction

Fribbit is a hungry frog. Click on the flies that will complete the subtraction problem correctly. Two levels.

Number Pyramid Escape- BBC

Help Molly find her way out to the pyramid by choosing the right number or symbol. Three levels.

Pearl Search Subtraction

Number facts to 9. Can you find the pearl with the answer to the subtraction problem? Many levels.

Two Less Than

Find TWO less than a given number. There is a number line to help you with counting back.

Ways to Make…

Find how many different ways you can put the teddies in two houses. Uses numbers to 10.

Year 2 - Explore the connection between addition and subtraction. Solve simple addition and subtraction problems using a range of efficient mental and written strategies. <back to top>

Addition Attack

The aliens are slowly descending! Shoot the alien with the answer. Starts with 1 digit addition problems, advances to double digits.

The Golden Path New - HERE for MOBILE!

You are a frog. Choose what operation you would like to practice. You be offered two questions. Choosing the lily that has the highest answer you'll find your through. Hope you can swim!

Bowling Pin Maths New - HERE for MOBILE!

Can you knock 'em down? Hit the bowling pins that say what you need. If it says 'Hit all the ones greater than 7' then use your knowledge of basic +, - and x to hit those ones! Best of ten frames...

Aquatic Speedway

Choose your fish and click the bubble with the answer to the subtraction problem to go faster. Loads of levels.

Are you a Math Magician?

Sharpen your mental maths skills against the clock. Includes addition, subtraction, multiplication and division. Many levels to choose from.

BMF- Best Maths Friends New - HERE for MOBILE!

A selection of word problems that can cover addition and subtraction. Each time you answer correctly you add another famous friend to your list of celebrities! 50 to collect! 

Brainie

Click on numbers that add up to the number on the right. Each level gets harder and harder!

Building Expressions

Can you find the missing numbers in the sums? See how many addition and subtraction problems you can get right.

Fruit Shoot Number Line Addition Game

Shoot the fruit with the sum on the number line. Three levels of addition to + 9.

Hit the Button! New - HERE for MOBILE!

Practice your times and division tables.Great for sharpening your mental maths skills. Select from addition, subtraction, times and division problems. Many levels.

Minus Mission

Shoot the slime before it invades by answering the subtraction sums. Uses numbers to 20.

Number Invaders Addition and Subtraction

Number Invaders are descending upon the planet. You'll need instant recall of math facts and a steady hand!

Rabbit Takeaway

If some rabbits run away how many will be left? A two level game using numbers to 20 and subtraction.

Spring Number

Counting, ordering, sequencing, number bonds, addition, subtraction, multiplication and more, all set around a Spring theme.

Sum Sense Addition

Arrange the single digit numbers to solve the ADDITION sum. Be quick… it's timed!

Sum Sense Subtraction

Arrange the single digit numbers to solve the SUBTRACTION the sum. Be quick… it's timed!

Year 3 - Recognise and explain the connection between addition and subtraction. Recall addition facts for single-digit numbers and related subtraction facts to develop increasingly efficient mental strategies for computation. <back to top>

Fruit Shoot Addition

Four levels using numbers to 100. Shoot the fruit with the answer to the addition problem. Loads of fun splatting fruit.

Tackle Ball Maths NEW - HERE for MOBILE!

Choose your team, the computer (or opponent’s) team, and the time limit. When you play the computer, some teams are harder to beat than others. Rumble down the field by answering addition, subtraction, multiplication and division facts in the given time. 

Alien Addition

A quick fire space invader addition game. It's a challenge but will improve your mental maths skills.

War Pretzels NEW - HERE for MOBILE!

Welcome to the first annual all-pretzel arm wrestling tournament. The strength of your pretzel-flexible arms is governed by your quick skills in addition and subtraction. Be quick and accurate. The calculations get harder as you move up levels.

Speed Math NEW - HERE for MOBILE!

Choose what operation you want to practice. +, -, X or /. Choose what numbers you would like to work on. How fast you go depends on how fast you are with your mental maths strategies! 

Bowling Pin Maths NEW - HERE for MOBILE!

Can you knock 'em down? Hit the bowling pins that say what you need. If it says 'Hit all the ones greater than 7' then use your knowledge of basic +, - and x to hit those ones! Best of ten frames...

Fruit Shoot Subtraction

Choose your level of subtraction challenge. Single and double digit subtraction with or without regrouping. Blast the fruit!

Guess My Number!

Choose from 'Addition and Subraction' or 'Multiplication and Division'… Loads of questions to get your brain working.

Magic Squares

Make each row, column and diagonal add up to the magic total. Some magic squares have a few numbers in already to get you going.

Maths Lines to 15

One of my favourites! Click the number you want to work on up to 15. Great practice for addition.

Waterslide Addition

Build a water slide using your knowledge of numbers to 20.

Waterslide Subtraction

Build a water slide using your knowledge of numbers to 20.

Year 4 - Apply place value to partition, rearrange and regroup numbers to at least tens of thousands to assist calculations and solve problems. <back to top>


Addition Number Twins

Click the range of numbers you want to work on up to 15. Match pairs of balls that add up to that number. Lot of levels to practice.

Drag and Drop Maths New - HERE for MOBILE!

Interactive learning tool for completing one, two, three, or four digit addition, subtraction, multiplication or division math problems. Completely customizable so YOU choose the number of problems you complete and HOW complicated you would like them to be. This program also corrects each problem after you have submitted your answer. 

Buffalo Maths New - HERE for MOBILE!

Shoot the buffalo with the math problem that equals the number in the upper right. You have three arrows. If you miss your target, or hit the wrong buffalo, you will lose an arrow. As you progress through each round, the buffalo move faster and the number in the upper right grows larger.

Maths Fries NEW - HERE for MOBILE!

Find the number in the top corner. Click on ALL of the fries that have a math problem that equals the number in the upper right corner. Use your mental addition and subtraction skills to solve the 25 questions in each round that equal the number and the 25 that don't.

Addition and Subtraction - BBC

Use your addition and subtraction skills to collect bio rods and destroy the evil Roboids. Takes a while to load but the graphics are excellent! Three games to work through.

Slapshot Maths NEW - HERE for MOBILE!

Use your addition and subtraction skills to blast shots into the goalie! Two problems for each shot. One for power and one for accuracy. Make it to 10 goals and you are awarded the 'HALL OF FAME' certificate that you can print out!

Maximum Capacity NEW - HERE for MOBILE!

The Monkeys need to get to the Gorrilla's Ball on the 5th floor. Can you fill the elevator just enough that they all get there? Use your addition, subtraction and estimation skills to help you out.

Addition Speed Grid Challenge – Level 1

Single and double digit addition speed practice…You will need really fast mental computation strategies here!

Addition Speed Grid Challenge – Level 2

Harder than Level 1! Single and double digit addition speed practice…You will need excellent mental computation strategies. Good luck!

Fruit Shoot Addition

Four levels using numbers to 100. Shoot the fruit with the answer to the addition problem. Loads of fun splatting fruit.

Maths Basketball

Select double digit addition, subtraction or multiplication. Throwing from the wrong answer spot will make you miss the basket. Two levels and lots of fun!

Power Lines – Phase one

Place the power cells in the circles so that the numbers equal the power line total. Complete 8 levels to receive the password to unlock phase two. Great sounds too.

Subtraction Grid Challenge– Level 1

Uses double digit numbers so you better be REALLY GOOD! This is a speed game. Answer the question at the bottom of the screen by clicking on two numbers in the grid.

Subtraction Grid Challenge– Level 2

Speed Grid challenge Level 2 is just a bit harder than Level 1. Answer the question at the bottom of the screen by clicking on two numbers in the grid.

Venn/Carroll Diagrams

This sorting tool will help you to investigate the features of multiples, odd and even and prime and composite numbers.

Year 5 - Use efficient mental and written strategies and apply appropriate digital technologies to solve problems. <back to top>

Fish Bowl

Use subtraction skills to play this bowling game. You may need a pencil and paper to help you solve the problems.

BMF- Best Math Friends New - HERE for MOBILE!

Choose your level - a selection of word problems that can cover addition, subtraction, multiplication, division and measurement... or everything! Each time you answer correctly you add another famous friend to your list of celebrities! 50 to collect!

2048 New - HERE for MOBILE!

Use your arrow key to move the tiles. When two tiles with the same number touch they merge into one. Can you make 2048 using your mental maths skills?

Maths Downhill Slalom New - HERE for MOBILE!

Choose an operation (x, -, + or /). If you choose the addition course, you might see + 6. This means that you must ski between all flags that show a + 6 relationship. If the flags are numbered 2 and 8, you would ski through them. If they are numbered 5 and 10, you would ski around them. You can work your way up to a GOLD medal certificate to print!

Fruit Shoot Addition

Four levels using numbers to 100. Shoot the fruit with the answer to the addition problem. Loads of fun splatting fruit.

Maths Lines to 15

Click the number you want to work on up to 15. Good fun and great practice for addition.

Year 6 - Select and apply efficient mental and written strategies and appropriate digital technologies to solve problems involving all four operations with whole numbers. <back to top>

Mental Maths - BBC

You'll need all your mental maths skills to escape with the bio-rods on this mission. Three games. Mental maths skills are essential. Good luck!

Drag and Drop Maths New - HERE for MOBILE!

Interactive learning tool for completing one, two, three, or four digit addition, subtraction, multiplication or division math problems. Completely customizable so YOU choose the number of problems you complete and HOW complicated you would like them to be. This program also corrects each problem after you have submitted your answer. 

Estimation Valley Golf NEW - HERE for MOBILE

Choose a character and the course. Putting green is one hole, junior course is six holes, and pro course is nine holes. Pro course includes multiplication, whereas junior course includes large addition and subtraction. If you're within %25 of the right answer you get another shot, if you get it right you get a HOLE IN ONE!

Negative Numbers - BBC

Use your knowledge of negative numbers to defeat the evil Roboids. Takes a while to load but the graphics are excellent! Three games.

Speed Grid Challenge - Level 3

So you’ve managed to come this far…Well done! Select the number of questions and the time and press START. Harder than Level 1 and 2 – Good luck!

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