Mastering 1 and 2 Step Addition and Subtraction

The video tutorial covers how to represent addition and subtraction problems using different methods such as strip diagrams, number lines, and equations. It provides examples like Farmer Fred's pigs for addition and Mrs. Cavazos' stickers for subtraction. The tutorial also explains different subtraction actions and how to solve real-world problems using these methods, including counting animals seen by Dr. Harkey.

Which model is not mentioned for representing addition?

• Equation

• Pie chart

• Strip diagram

• Part-part-whole model

Tags

CCSS.5.NBT.B.7

What does physically taking away represent in subtraction?

• Adding items

• Removing items

• Separating parts

• Comparing quantities

How many subtraction actions are discussed?

• Five

• Four

• Three

• Two

Tags

CCSS.2.OA.A.1

What total number of stickers did Mrs. Cavazos initially have?

• 500

• 453

• 87

• 540

Tags

CCSS.2.NBT.B.7

Which equation represents the number of stickers Mrs. Cavazos used?

• Used + Left = Total

• Total - Used = Left

• Used - Left = Total

• Total / Used = Left

Tags

CCSS.5.NBT.B.7

What is the correct representation to find the number of stickers left?

• Venn diagram

• Pie chart

• Bar graph

• Number line

Tags

CCSS.4.MD.B.4

How many animals were dogs in Dr. Harkey's count?

• 154

• 247

• 82

• 11

Tags

CCSS.1.NBT.A.1

What is the total number of animals Dr. Harkey saw?

• 82

• 154

• 236

• 247

Tags

CCSS.1.NBT.A.1

Which method is not used to solve Dr. Harkey's problem?

• Histogram

• Strip diagram

• Equation

• Number line

Tags

CCSS.3.OA.D.8

How can you find the number of cows Dr. Harkey saw?

• Total + Dogs + Cats

• Total - (Dogs + Cats)

• Dogs + Cats - Total

• Total / (Dogs + Cats)

Tags

CCSS.3.OA.D.8