Addition and Subtraction KS1 I'm Eight /55/note Stage: 1, 2, 3 and 4 Find a great variety of ways of asking questions which make 8. You may also be interested in this collection of activities /55/note https://www.stem.org.uk/resources/community/collection/413270/addition-and-subraction from the STEM Learning website, that complement the NRICH activities above. Two Dice /150/note Stage: 1 Find all the numbers that can be made by adding the dots on two dice. /150/note 2,4,6,8 /175/note Stage: 1 Using the cards 2, 4, 6, 8, +, - and =, what number statements can you make? /175/note 4 Dom /179/note Stage: 1, 2, 3 and 4 Use these four dominoes to make a square that has the same number of dots on each side. /179/note Number Round Up /188/note Stage: 1 Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre. /188/note One Big Triangle /192/note Stage: 1 Make one big triangle so the numbers that touch on the small triangles add to 10. You could use the interactivity to help you. /192/note Butterfly Flowers /229/note Stage: 1 Can you find 2 butterflies to go on each flower so that the numbers on each pair of butterflies adds to the same number as the one on the flower? /229/note Ladybirds in the Garden /1816/note Stage: 1 In Sam and Jill's garden there are two sorts of ladybirds with 7 spots or 4 spots. What numbers of total spots can you make? /1816/note Cuisenaire Counting /2724/note Stage: 1 Here are some rods that are different colours. How could I make a dark green rod using yellow and white rods? /2724/note Cuisenaire Environment /4348/note Stage: 1 and 2 An environment which simulates working with Cuisenaire rods. /4348/note Number Balance /4725/note Stage: 1 Can you hang weights in the right place to make the equaliser balance? /4725/note Weighted Numbers /4726/note Stage: 1 Use the number weights to find different ways of balancing the equaliser. /4726/note Domino Sorting /4940/note Stage: 1 Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why? /4940/note Secret Number /5651/note Stage: 1 Annie and Ben are playing a game with a calculator. What was Annie's secret number? /5651/note Number Lines /5652/note Stage: 1 Leah and Tom each have a number line. Can you work out where their counters will land? What are the secret jumps they make with their counters? /5652/note Getting the Balance /5676/note Stage: 1 If you hang two weights on one side of this balance, in how many different ways can you hang three weights on the other side for it to be balanced? /5676/note Tug of War /5897/note
Stage: 1 Can you use the numbers on the dice to reach your end of the number line before your partner beats you? /5897/note Find the Difference /6227/note Stage: 1 Place the numbers 1 to 6 in the circles so that each number is the difference between the two numbers just below it. /6227/note Strike it Out /6589/note Stage: 1 and 2 Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game. /6589/note Sort Them Out (1) /6885/note Stage: 1 Can you each work out the number on your card? What do you notice? How could you sort the cards? /6885/note How Many? /6927/note Stage: 1 This project challenges you to work out the number of cubes hidden under a cloth. What questions would you like to ask? /6927/note Pairs of Numbers /7233/note Stage: 1 If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why? /7233/note The Add and Take-away Path /7281/note Stage: 1 Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own? /7281/note What Was in the Box? /7819/note Stage: 1 This big box adds something to any number that goes into it. If you know the numbers that come out, what addition might be going on in the box? /7819/note Doing and Undoing /8292/note Stage: 1 and 2 An investigation looking at doing and undoing mathematical operations focusing on doubling, halving, adding and subtracting. /8292/note How Do You See It? /8296/note Stage: 1 and 2 Here are some short problems for you to try. Talk to your friends about how you work them out. /8296/note