Calculating with letters

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 1,2

Wiskunde!

Math

Put on your table please:

book

notebook

laptop

pencil case

What does "simplify" means?

What are like terms?
Give an example of an addition exercise with like terms

7a - 5b + 3a - 4b = ....

1. 10a​2​​−9b​2​​
2. 10a+9b
3. 10a−9b
4. 4a−1b

- 6a + 5b - 2a + 9b = ....

(Typ in the answer, without spaces)

How do you workout brackets?

(a+b)(c+d)

(Typ in the answer, without spaces)

(2x+1)(3x−1)

What is the answer of this special binomial?

(a+1)(a−1)

Simplify.

(4a+2)(4a−2)

1. 8a−4
2. 16a​2​​+4
3. 8a​2​​−4
4. 16a​2​​−4

​3a​​12a​​=

(Typ in the answer, without spaces)

6c⋅5e⋅2d=

(Typ in the answer, without spaces)

15x⋅0⋅9x=

3x⋅5x⋅3y=

1. 11xxy
2. 45xxy
3. 45x​2​​y
4. 11x​2​​y

What happens when you divide a fraction?

Calculate.

​2y​​5x​​:​y​​6x​​

​5​​10a​​−​6​​18a​​=

​b​​a​​⋅​a​​b​​=

What happens when you simplify the power of a power?

Simplify.

5(x​4​​)​3​​−7(x​2​​)​4​​

What is the difference between "The power of a power" & "The power of a product".

Simplify.

−2(a​5​​)​2​​+(−2a​4​​)​2​​

What happens with the exponents when dividing with powers?

Simplify

​(a​3​​)​5​​​​3(a​5​​)​3​​+2a​7​​⋅a​8​​​​

Rewrite without a negative exponent.

x​−8​​

1. x​8​​
2. ​x​​8​​
3. ​x​8​​​​1​​
4. ​1​​x​8​​​​

What is the standard formula for a scientific notation

Rewrite in scientific notation.

65430000000

Rewrite in regular notation.

2,7⋅10​−12​​

What are your thoughts on doing a repetition with lessonup?

What did we do today?

Repeat CH 2

Still have questions? Ask me the next class!