# Review unit conversions and algebra

7000 cm =
A
0.7 m
B
70 m
C
700 000 m
D
70 000 000 m
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Slide 1: Quizvraag
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In deze les zitten 34 slides, met interactieve quizzen en tekstslides.

## Onderdelen in deze les

7000 cm =
A
0.7 m
B
70 m
C
700 000 m
D
70 000 000 m

2.4 km =
A
0.0024 m
B
0.24 m
C
24 m
D
2400 m

17 m =
A
0.017 mm
B
1 700 mm
C
17 000 mm
D
17 000 000 mm

A
0.037
B
0.37
C
37
D
370

A
50
B
5000
C
500 000 000
D
50 000 000 000

A
0.0034
B
0.34
C
3400
D
340 000

A
0.000 000 02
B
0.000 02
C
20
D
20 000

A
0.0 035
B
35
C
3500
D
350 000

#### Slide 8 -Quizvraag

Terms are 'like terms' if they have the same combination of letters.
If the terms are not 'like', then write 'na' for 'no answer'.
(shorter than 'cannot be simplified' as is shown here !! )

#### Slide 10 -Tekstslide

Expanding brackets

#### Slide 13 -Tekstslide

Solving linear equations
The next few slides show examples of how to solve linear equations.

#### Slide 17 -Tekstslide

with brackets
1. Work out the brackets,
3. Add and subtract so the letter term is on the left and the number on the right. (Here +6x and +5 on both sides.)
4. Divide by the number in front of the letter!

#### Slide 18 -Tekstslide

with fractions
Get rid of fractions by multiplying by a number that all denominators fit into.
The numbers 6, 8 and 2 all fit into 24!
(24 is the lowest commom multiple of 2, 6 and 8)

5p + 7p

7x + x

8x + 7y + 2x + y

x + y

5x - 12x

-5x - 7x

3a - 8 - 5 - 2a

5(a - 2)

-2(3x + 6)

-(3a + 6b)

#### Slide 29 -Open vraag

-3(p - q) + 5(q - 2p)

#### Slide 30 -Open vraag

-4(2 - 3a) + 5(0.3a + 0.4)

-18 -(a - 12)

#### Slide 32 -Open vraag

Practice solving equations
Do this from the handout!
And check your work with the solutions given.