1at calculating with letters

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 1

Calculating with letters

lesson goals:

- I can add letters

- I can multiply letters

things you add

to write shorter

multiplication

addition

factors

like

Terms

Simplifying

Product

sum

things you multiply

the same

Calculating with letters

n+n+n+n+n+n+n=?

The sum of like terms!

Adding like terms

a + a =2a

3a + 2a = 5a

6b - b = 5b

2a + 3b = not possible, they are not like terms

1a = a

True

False

3a + 3a + a =

3a + 5b + 8a - 2b

Multiplying letters

1. Multiply the numbers

2. write down the letters in alphabetical order.

example: 4a x 5b = 20ab

3a x 8b =

1. 38ab
2. not possible
3. 11ab
4. 24ab

1. multiply the numbers

2. write down the letters in alphabetical order.

Homework:

This week 6.4 and 6.5

Lesson goals:

- I can add letters

- I can multiply letters