Word problems

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 2

Good afternoon!

Schedule: 

• Learning goals 
• Homework check
• Starter
• Word Problems
• Work 
• Mini Mystery!

Learning goals 

At the end of this lesson I can:

• Solve word problems algebraically 
• Write equations using given information

Starter 1

Starter 1

a.) a + b

Starter 1

a.) a + b

b.) a + b + c

Starter 1

a.) a + b

b.) a + b + c

c.) b + 4

Starter 1

a.) a + b

b.) a + b + c

c.) b + 4

d.) a - 6

Starter 2 

Callum has a collection of badges. His aunt gives him 9 more badges. Then, during carnaval break, Callum collected enough to double his collection. He now has 132 badges in total. How many badges did Callum have to start with? 

1. Write an equation using the information

2. Find the answer to the question. 

Word problems starter 

Callum has a collection of badges. His aunt gives him 9 more badges. Then, during carnaval break, Callum collected enough to double his collection. He now has 132 badges in total. How many badges did Callum have to start with? 

1. 2(x + 9) = 132

2.             2x + 18 = 132

                        2x = 114

                          x = 57

Callum had 57 badges to start with 

Word problems 

To solve a word problem: 

step 1: Let x be the unknown quantity/number to be found

step 2: Write an equation using the information

step 3: Solve the equation

step 4: Write the answer to the question in a sentence 

Word problems

When Nicola went to the state car museum, she saw cars and three motorbikes. In total she saw 134 wheel in the museum. How many cars did Nicola see? 

Step 1: What is the unknown/x ? 

Word problems

When Nicola went to the state car museum, she saw cars and three motorbikes. In total she saw 134 wheels in the museum. How many cars did Nicola see? 

Step 1: What is the unknown/x ? 

Step 2: Write an equation

Word problems

When Nicola went to the state car museum, she saw cars and three motorbikes. In total she saw 134 wheel in the museum. How many cars did Nicola see? 

Step 1: What is the unknown/x ?                                    4x + 6 = 134

Step 2: Write an equation

Step 3: Solve the equation                       

Word problems

When Nicola went to the state car museum, she saw cars and three motorbikes. In total she saw 134 wheel in the museum. How many cars did Nicola see? 

Step 1: What is the unknown/x ?                                    4x + 6 = 134

Step 2: Write an equation

Step 3: Solve the equation      

Step 4: Answer the question                 

Let's get to work! 

p. 215-216: 10J             1, 2, 3, 4

p. 216: 10J             4, 5, 6, 7

p. 216: 10J              7, 8, 9, 10

Finished? Continue with the Circuit training worksheet

Word problems Murder Mystery

Did you find the culprit?

Don't spoil it for the others!! secretly tell the teacher to check if you are correct

You can: 

- help the people in your group solving the questions

- continue with the circuit training worksheet from yesterday 

- Work on Files > Unit 3 > Challenging Multistep equations 2