# Level 1 revision

Essential skills
Level 1 revision
1 / 24
Slide 1: Tekstslide
MathematicsLower Secondary (Key Stage 3)

In deze les zitten 24 slides, met interactieve quizzen en tekstslides.

## Onderdelen in deze les

Essential skills
Level 1 revision

#### Slide 1 -Tekstslide

Fractions
Introduction

Fractions are parts out of a whole. The whole or total amount is always the
bottom of the fraction. The part you are interested in is the top of the fraction.
The line represents a division.

#### Slide 2 -Tekstslide

To find fraction parts
÷ by the bottom of the fraction × by the top of the fraction
Did you know
You can multiply
by the to first
and then divide by the
bottom and still get

#### Slide 3 -Tekstslide

Simplifying Fractions  This means writing the fraction in its lowest terms. To do this you need to divide
both top and bottom of the fraction by the same number to make them smaller.

#### Slide 4 -Tekstslide

1/2 is the same as...
A
50%
B
20%
C
2%
D
5%

#### Slide 5 -Quizvraag

To find 1/4 of an amount....
A
divide by 2
B
divide by 4
C
divide by .5
D
divide by .4

#### Slide 6 -Quizvraag

What is 1/4 of 5600?
A
1400
B
2800
C
1600
D
1800

#### Slide 7 -Quizvraag

Look out for the words of and off
You may be asked to take a fraction off an amount.
There is 1/4 off the price of a DVD that costs £20. What does it cost now?
First find 1/4 as we did above but then take the 1/4 off using subtraction.
20 ÷ 4 = 5     5 × 1 = 5 This is 1/4 but we need to take this off the original price.20 – 5 = 15 so the new price is £15.
You may also need to use this technique if you see words such as
reduced by, discount, saving

#### Slide 8 -Tekstslide

10 out of 30 students were under 18. Express this amount as a fraction in its simplest form
A
10/30
B
1/3
C
18/30
D
3/10

#### Slide 9 -Quizvraag

If a third (1/3) of students were under 18, what fraction were over 18?
A
1/3
B
2/3
C
18/30
D
3/3

#### Slide 10 -Quizvraag

40 out of 120 students are vegetarian. Express this as a fraction in its simplest form.
A
4/12
B
40/120
C
2/6
D
1/3

#### Slide 11 -Quizvraag

2 out of 14 students are vegetarian. What is the likelihood/probability of a student being vegetarian?
A
impossible
B
likely
C
unlikely
D
even chance

#### Slide 12 -Quizvraag

What is range?
A
Total divided by number of items.
B
Highest take away lowest.
C
A shop in Ballymena
D
a list of items

#### Slide 13 -Quizvraag

What calculation is needed for volume?
A
l + w + h
B
l x w x h
C
2l+2b
D
hx4

#### Slide 14 -Quizvraag

The volume of a cuboid measuring 30cm by 20cm by 15cm is...
A
9000cm
B
9000cm3
C
65cm3
D
65cm

#### Slide 15 -Quizvraag

Write 13:35 in the 12-hour clock.
A
1.35
B
1.35pm
C
half 1
D
20 to 2

#### Slide 16 -Quizvraag

Write 4.55pm in the 24-hour clock.
A
16:55
B
14:55
C
5 - 2 -5
D
5 past 4

#### Slide 17 -Quizvraag

Write 2.05pm in the 24-hour clock.
A
02:05
B
14:05
C
20;05
D
14:5

#### Slide 18 -Quizvraag

Mean is...
A
Total divided by number of items
B
Highest take away lowest
C
middle number
D
being cross

#### Slide 19 -Quizvraag

Check this calculation:
8/25= 0.32
A
0.32 x 25 = 8
B
8/.32 = 25
C
.32 x 8 = 25
D
32/.8 =25

#### Slide 20 -Quizvraag

If you have a total and need to work out one/per or each of something, what calculation is needed?
A
B
subtract
C
multiply
D
divide

#### Slide 21 -Quizvraag

Which is heavier?
A
3.3kg
B
3.251kg
C
.3333kg
D
33333g

#### Slide 22 -Quizvraag

Which is greater?
A
8.9
B
8.891
C
.98
D
9

#### Slide 23 -Quizvraag

What is 3500g in kg?
A
35kg
B
3.5kg
C
350kg
D
.35kg