Sally and her mum were at home. Her grandma came around to visit, then her dad and brother came home together.
Which number sentence matches the number of people in the house?
$2-1+2$2−1+2
$2+1-2$2+1−2
$2+1+2$2+1+2
$1+1+2$1+1+2
How many people are in the house altogether?
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers
uses mental and informal written strategies for multiplication and division