Addition+and+Subtraction

Addition and Subtraction

 * Click here to see related SOL.**

Function Machine (SOL 2.6, SOL 2.7) []
 * Sites for Interactive Whiteboard** (May also be used by individuals or small groups with problems to solve.)

Adding 2-Digit Numbers (SOL 2.6) Add two or three 2-digit numbers by adding the tens digit and the units digit separately. Break the numbers up and add them together again. []

Calculating Stories - Counting On (SOL 2.8) []

Calculating Stories - Taking Away (SOL 2.8) []

Function Machine - Add or Subtract (SOL 2.5, SOL 2.6, SOL 2.7) []

Estimate - for practice estimating or rounding to apply to estimated sums and differences (SOL 2.6, SOL 2.7) []

Sum Scales - Create a sum and put it on one side of the scales. Challenge pupils to create a sum to balance the scales. (SOL 2.6, SOL 2.7) http://www.tes.iboard.co.uk/activity/3413

Number Targets (Random) - Ask pupils to find different ways of adding and subtracting to reach a target. If they miss the target, they have to adjust with another calculation until they succeed. Does adding (or subtracting) in chunks of 5 or 10 make it quicker? (SOL 2.5, SOL 2.6, SOL 2.7) []

Number Targets (Set a Number) - Choose a starting number and target number, and ask pupils to find different ways of adding and subtracting to reach that target. Ask pupils to make calculations to hit a target number. If they miss, they have to adjust with another calculation until they succeed. Ask pupils to try using just addition, just subtraction, then both... (SOL 2.5, SOL 2.6, SOL 2.7) []

Mental Adding (Friendly Numbers, Combinations of Ten) - Ask pupils how to split the one digit number to step to the next ten, when adding one digit to two digits. Can pupils use the number line below to help? (SOL 2.6) []

Missing Number - Set the target to 10 and see how many sums pupils can complete correctly in a minute. Great to practice speedy recall of facts. Also, try playing as a class game, with challengers from teams playing at the whiteboard with their team-mates giving advice. (SOL 2.5) []

Inverse Relationships (+ and -)Fact Families - Make number sentences using the three numbers provided. Save them in the bank and check your answers. [] (SOL 2.9)

Counter Square - Play "Four in a Row" a sum game - directions found on the site []

Adding 3 or More Numbers []

Buzzing Along the Number Line - Use this number line to model "jumps" on a number for addition. []

Beam Me Up Addition (SOL 2.6) [] Pair to 10 - facts that make ten (SOL 2.5) [] Find the missing sign to make the sum of the equation correct (+, -, x, and division signs mixed) [] Fun adding game with dropping tiles [] Really Easy addition problems to find sums – 10 problems [] Really Easy subtraction problems to find differences – 10 problems [] Good site! Addition & Subtraction problems (rimed for x number of mins and choose skill level) [|http://www.playkidsgames.com/games/mathfact/default.htm#] Good site! Addition / Subtraction problems (can choose skill level only here) [|http://www.playkidsgames.com/games/mathfact/default.htm#] Cute site; Addition / Subtraction problems (can choose skill level only here) [|http://www.playkidsgames.com/games/apples/default.htm#] Basic addition / subtraction problems (can choose skill level only here) [|http://www.playkidsgames.com/games/robot/default.htm#] Challenging timed addition game [|http://www.playkidsgames.com/games/Tunnel/add.htm#] Challenging timed subtraction game [] Basic adding problems – computer checked [|http://www.playkidsgames.com/games/math/add.htm#] Basic subtracting problems – computer checked [] Maze-like game with subtraction [] Painting by Addition [] Fun! Karate addition [] Who Wants to be a Millionaire Addiion [] Timed subtraction facts to beat a clock; click on one of the mixed levels for easier problems [] Creating subtraction number problems with answers; timed [] Creating addition number problems with answers; timed [] Addition/subtraction/mixed practice; can pick the equal amount & timed limit [] High Rise Math; 2 – player addition game [] Addition Surprise! Fun! [] Make the answer Flashcard Addition; can choose skill level [] Make the answer Flashcard Subtraction; can choose skill level [] Eggs on Legs Addition; can choose skill level (For Evaluation Only site) [] Eggs on Legs Subtraction; can choose skill level (For Evaluation Only site) [] Addition Arithmagons; can choose how many puzzles and missing pieces (For Evaluation site) [] Subtraction Arithmagons; can choose how many puzzles & missing pieces (For Evaluation site) [] Spacey Math: Addition & Subtraction [] Math Mayhem: Addition & Subtraction [] Adding Bricks [] Hidden Picture: Addiction [] Hidden Picture: Subtraction [] Addition Matho (Bingo); self checking (in a way) [] Addition Concentration [] Planet Blaster: Addition [] Fill in Addition Flashcard answers [] Fill in Subtraction Flashcard answers [] Picture Sentences: matching picture sentences with numerical ones [] Addition & Subtraction word problems []
 * Sites for Review and Practice to Build Fluency**