Shark Counting and Operations

The video tutorial explains a simple subtraction problem using a scenario with sharks at a reef. Initially, there are 10 sharks, and then 2 swim away. The video guides viewers through the process of subtracting 2 from 10, using both verbal explanation and visual aids to demonstrate that 8 sharks remain.

How many sharks were initially present at the reef?

• 15

• 5

• 20

• 10

What action did the two sharks take?

• They stayed still

• They swam away

• They jumped out of the water

• They chased a fish

What mathematical operation is used to find out how many sharks are left?

• Division

• Subtraction

• Multiplication

• Addition

After two sharks swam away, how many sharks remained?

• 6

• 7

• 8

• 9

If three more sharks swam away, how many would be left?

• 5

• 4

• 3

• 2