PRACTICE: Addition and subtraction
Interactive practice questions
$28+19+12$28+19+12
Which story matches the number sentence?
Bill has $28$28 marbles, his friend Tom gives him $12$12 marbles, and Bill then gives $19$19 marbles to Sally.
There are $28$28 people working in a supermarket, $19$19 people leave the supermarket over the next hour and $12$12 people enter.
There are $28$28 pigeons in a park, $19$19 more pigeons fly in to the park, and then after an hour, another $12$12 fly in.
How many pigeons are in the park?
Find the value of $80041+9900$80041+9900.
Which of the following patterns is increasing by $6$6?
A retail store has sold $761$761 of their shirts over the last $9$9 months and is expected to sell $22$22 shirts in the next month, $67$67 shirts in the following month and $35$35 shirts in the month after that.
If the store meets their expected sales in the next three months, how many shirts will they have sold over the last year?