Home > Stage 2 > Multiplicative relations > Double or halves
Use arrays to establish multiplication facts from multiples of 2 and 4, 5 and 10
Relate doubling to multiplication facts for multiples of 2
Recognise that doubling is multiplying by 2 and halving is dividing by 2 (Reasons about relations)
Indoor or outdoor playing area
Chalk to form 9 concentric circles on the ground
Throw-line 3 metres from target
One bean bag per player.
Paper or whiteboard and marker.
Set up bullseye (chalk) and label 2, 4, 6, 8, 10.
Mark throwing line.
Players form pairs and record target number on whiteboard or paper.
Players in small groups roll or throw balls to a target aiming to make a number close to the target number.
Choose a target number between 0 - 100 and write this on your sheet of paper.
The first player throws the beanbag onto the bullseye and chooses whether to double or halve the number.
Record the throw.
Take it in turns to throw the beanbag, keeping a running total.
If a player can't go, they miss a turn.
The winner is the player who reaches the target number exactly.
Play with 2-, 4-, 5- or 6- digit numbers.
Change the target number between 1000-10000.
Play using decimal numbers by changing the values of the bullseye circles, eg. include 1, 3, 5, 7, 9.
Change the value of the bullseye circles, eg. 100, 200, 500.