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?
$27+4-5$27+4−5
Kate has saved $\$138$$138 over the course of the year. If she earns $\$12$$12 this week from doing chores, but spends $\$40$$40, how much does she have left?
A farmer has $84$84 sheep in a paddock. $10$10 sheep are taken away to the wool shed, and while the farmer is away $3$3 sheep from a neighboring farm get into the paddock through a hole in the fence.
How many sheep are in the paddock now?