Adding Three Numbers

The video tutorial explores the concept of counting groups of marine animals using addition. It introduces strategies like finding numbers that sum to ten and using doubles facts to simplify addition. The tutorial covers various examples, including counting fish, sharks, jellyfish, and other sea creatures in an aquarium setting. The aim is to teach viewers how to efficiently add multiple numbers using these strategies.

What is a 'school of fish'?

• A type of fish

• A fish feeding area

• A group of fish swimming together

• A place where fish learn

How many fish are there in total if you have 3 blue fish, 6 orange fish, and 4 rainbow fish?

• 14

• 10

• 12

• 13

What is the total number of sharks in the tank if there are 2 hammerhead sharks, 2 tiger sharks, and 6 nurse sharks?

• 12

• 14

• 10

• 8

Which addition strategy is used when you see two numbers that are the same?

• Counting on

• Subtraction

• Doubles fact

• Making a ten

How many glowing jellyfish will be in the tank after all arrive, if there are initially 3, then 9 more, and finally 4 more?

• 16

• 14

• 15

• 17

What is the total number of animals in the touch tank if there are 6 horseshoe crabs, 8 turtles, and 1 ray?

• 14

• 15

• 16

• 17

Which strategy involves finding the doubles fact of a smaller number and adding one?

• Counting on

• Doubles plus one

• Doubles fact

• Making a ten