
Subtraction 

Objective:
Think of subtraction as 'taking away'. Take a way by counting back from a number.






Aztec Take Away

A 2 player or 2 team game. Race to zero to splat the other team with goo.








Objective:
Y2: Practise division as repeated subtraction or grouping (2's, 5's and 10's)






Airline Grouping

Click on the people to place them into the aircraft. Practise division as repeated subtraction or grouping. Practise for 2's, 5's and 10's.








Objective:
Y1: Use infomal methods for addition of a one digit number, or 10 to a one or two digit number.
Calculate add/take away 9 and 11 by moving 10 and then adjusting by one.
Y2: Use practical and informal methods to add and subtract twodigit numbers.






Mummy Number Lines

A numberline calculation activity. Includes three levels of addition and subtraction, adding and taking awa y 9, 10 and 11.








Objective:
Y1: Use infomal methods for addition of a one digit number, or 10 to a one or two digit number.
Y2:
Use practical and informal methods to add and subtract twodigit numbers.
Y3: Calculate subtraction as difference.






Numberline Boxes

A numberline demonstrator. You can take away, calculate subtraction as the difference or complete division calculations via repeated subtraction.








Objective:
Y1:To understand subtraction as 'take away'
Y2: Use informal methods to represent addition, subtraction, multiplication and division.






Numberline Jump Maker

A numberline demonstrator. You can take away, calculate subtraction as the difference or complete division calculations via repeated subtraction.








Objective:
Y1:To understand subtraction as 'take away'
Y2: Use informal methods to represent addition, subtraction, multiplication and division.






Bottle Take Away

A demonstrator for use on the IWB. Use the plus sign to add more bottles (up to 21 bottles). Then cut the string to smash the bottles.
Why not try giving the children subtraction number sentences on strips of paper and asking them to use this resource to check their answers.








Objective:
Y1/2: Adding by bridging through 10.
Y1: Find the 'difference' by counting up.
Y2: Use informal methods to represent addition, subtraction, multiplication and division.






Number
line

A demonstrator for use on the IWB. Draw leaps and click for number tags on the lines.
You will need Flash Player 6:Get Flash Player 6 







Objective:
Y1: To understand the operation of subtraction as 'taking away'.






Soccer Subtraction

In this direct free kick you must read the number sentence on the Brazil team shirts, then take away the correct number of players in the wall. Then click on the England player to score. Unusually, if you miss, Brazil gain a goal!
You will need Flash Player 6:Get Flash Player 6 







Objective:
Y1: To give change for totals up to 20p.






change eXchanger

Scan the items on the conveyor belt and give your customer their change.
You will need Flash Player 6:Get Flash Player 6 







Objective:
Y1 & Y2: To understand the opreation of subtraction as 'taking away'.






Abacus

A simple Abacus for use on the IWB.
You will need Flash Player 6:Get Flash Player 6 







Objective:
YR, Y1 & Y2: Recall number facts to 5, 10 or 20.
Recall bonds of 5, 10 or 20.
Recall doubling facts to 10 or 20.
Y2: Use '5 and a bit' facts when adding.






Brilliant Beadstring
Now with colour changer!!
Thank you
Mr Henry!

Teaching tool only:
Choose one or two beadstrings. Practise bonds of 10 or 20, number facts to 10 or 20.
Year 2 classes could practice '5 and a bit' facts. Drag the screenshade over the beads to hide a number.
You will need Flash Player 6:Get Flash Player 6
PLEASE MOVE THE BEADS STEADILY. Overzealous bead dragging may result in them overlapping. If this happens, refresh the page.
Thank you to Mr Henry from Smeeth Primary School for suggesting the colour changer!! 







Objective:
Y1: Make 5 and 'a bit'.
Practise addition facts up to 5+5.
To count on when adding.






Funny Fingers

Teaching Tool Only!
Click on the fingers to demonstrate addition facts up to 5+5, e.g. 4+3=7.
Demonstrate 5 and 'a bit' facts, e.g. 5+3=8
You will need Flash Player 6:Get Flash Player 6 







Objective: Say a number that is 10 less than any given number to 99.






10 Less Shoot Out

Kick the ball with a number 10 less than the one on the goalie's shirt.









Objective:






Count On Convict

To stop the prisoners escaping calculate the difference between two numbers .
This game uses a number line. 







Objective:
To develop pencil and paper methods to complete additions.
To add two 2digit numbers together by adding the tens digit first.






Techno Tortoise

A demonstrator for the use of number lines.
Includes a game for adding two 2digit numbers together by adding the tens first. Answer 5 questions correctly and you can play the flying game.
You will need Flash Player 6:Get Flash Player 6 







Objective:






Add Subtract Number Lines

Use the number line to demonstrate your choice of addtion or subtraction problem. 







Objective: read whole numbers from 0 to 100.
vocab: tens, units, ones
Take away 10 from a given 2 digit number.






100 Hunt 10

As above but this time subtract 10 from the number shown.








Objective: read whole numbers from 0 to 100.
vocab: tens, units, ones
Subtract 11 from a given 2 digit number by subtracting 10 and correcting by 1.






100 Hunt 11

As above but this time subtract 11 from the number shown.








Objective: (YR) Remove a smaller number from a larger and find how many are left by counting back from the larger.
(Y1)recognise subtraction as 'taking away'.






Target Take Away

A random subtraction sum generator. All values less than 20.










