The video tutorial explains a subtraction problem involving children on a school bus. Initially, there are 15 children, and after 3 get off, the solution is found by subtracting 3 from 15, resulting in 12 children left. The tutorial then presents a practice problem with 12 children, where 3 are picked up, leaving 9. The video guides viewers through the subtraction process, emphasizing counting backwards to find the solution.

If there are 15 children on a bus and 3 get off, how many children are left on the bus?

• 12

• 10

• 15

• 13

Tags

CCSS.1.OA.A.1

What is the initial number of children on the bus before any get off?

• 10

• 12

• 15

• 18

Tags

CCSS.2.OA.A.1

In the practice problem, how many children are waiting to be picked up from school initially?

• 9

• 15

• 10

• 12

Tags

CCSS.2.OA.A.1

After 3 children are picked up by their parents, how many children remain?

• 6

• 8

• 9

• 10

Tags

CCSS.2.OA.A.1

What operation is used to find out how many children are left after some leave?

• Addition

• Subtraction

• Multiplication

• Division

Tags

CCSS.2.OA.A.1