Writing Equations for Addition Word Problems

This video tutorial covers writing equations to represent addition, emphasizing the importance of the equal sign and the concept of balance in equations. It introduces various strategies for solving addition problems, including using equations, bar models, and base 10 blocks. The tutorial also demonstrates solving word problems by identifying key information and using equations to find missing addends. Higher order thinking skills are applied to compare quantities and estimate values without exact calculations. The video concludes with a preview of the next lesson on finding sums for three addends.

What is an equation?

• A mathematical statement without an equal sign

• A mathematical statement with an equal sign showing two sides with different values

• A mathematical statement with only numbers

• A mathematical statement with an equal sign showing two sides with the same value

Which of the following is NOT a strategy for solving addition problems?

• Writing an equation

• Using a calculator

• Drawing a quick picture

• Using a bar model

Which clue word indicates an addition problem?

• Multiply

• Subtract

• Divide

• Increase

What is the first step in solving a word problem?

• Solve for the missing number

• Identify the important information

• Draw a picture

• Write an equation

Tala has 14 pieces of gum and Sophia has 12 pieces. How many pieces do they have together?

• 30

• 24

• 26

• 28

Mr. Kim grew 28 pumpkins, 18 are large. How many are small?

• 14

• 12

• 10

• 8

Sujin read some pages, then 30 more, totaling 72 pages. How many pages did she read initially?

• 32

• 42

• 52

• 62

Mr. Kim grew 33 large pumpkins and 27 small pumpkins. How many pumpkins did he grow in total?

• 60

• 55

• 65

• 50

Compare the number of pumpkins (60) and zucchini (57) Mr. Kim grew. Which is greater?

• Cannot be determined

• Pumpkins

• Zucchini

• They are equal

Sarah needs about 50 beads. Which two boxes should she choose to get close to 50 without adding?

• 18 and 34

• 18 and 45

• 34 and 64

• 45 and 64