Transcript Round up or round down?

Rounding Numbers
What is a whole number?
A number that stands on its own.
A number without little bit more.
Whole Numbers
1
36
100
302
1456
Mixed numbers
1
12
45.78
12.32
2
Rounding to nearest whole
number.
24.15
12.3
4.5
3.6
2.1
Division
Learn to know when to round
up or round down when
answering division questions.
Round up or round down?
There are 150 children and teachers going on
a theatre trip. They need to travel from the
school to the theatre in coaches. Each coach
can carry 60 children. How many coaches will
be needed?
150 ÷ 60
3 coaches needed
= 2.5
Round up
Round up or round down?
I have saved £234. A train ticket
costs £52. How many tickets can I
buy.
£234 ÷ 52 = 4.5 tickets
4 tickets only.
Round down
Round up or round down?
I have 134 oil lamps. How many
boxes will I need to carry all the
lamps, if each box can carry 8 lamps.
134 ÷ 8 = 16.75 boxes
17 boxes.
Round up
Round up or round down?
I have 240 cakes. One box holds 52
cakes. How many boxes would I
need for all the cakes.
240 ÷ 52 = 4.615384
5 boxes
Round up
Round up or round down?
1. I have saved £360. A train
ticket costs £50. How
many tickets can I buy?
£360 ÷ 50
7 tickets
= 7.2
Round down
Round up or round down?
2. A coach carries 72 people. How many
coaches are needed to transport 378
people on a trip to watch a football
match?
378 ÷ 72
6 coaches
= 5.25
Round up
Round up or round down?
3. 297 apples fall off the tree and need to be
packed in boxes. 44 apples can fit in a box.
a) How many full boxes will there be?
b) How many boxes will be needed to carry
all the apples?
297 ÷ 44
= 6.75
6 full boxes Round down
7 boxes altogether
Round up
Round up or round down?
4. Puppets need 8 strings. How many
puppets can be made from 278 strings?
278 ÷ 8
34 puppets
= 34.75
Round down
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5. A robot in a factory sews buttons on
coats. Each coat has 7 buttons. The robot
breaks down after sewing 328 buttons.
How many coats are finished?
328 ÷ 7 = 46.857142857143
46 coats
Round down
Round up or round down?
A school has 250 children and they
are all going on a trip together. A
coach can hold 52 children. How
many coaches will they need?
250 ÷ 52 = 4.807692307692
5 Coaches
Round up
Round up or round down?
I have 5 metres of ribbon and I need
lengths of 865mm for the Summer
Fayre stalls. How many of these
lengths can I get from the ribbon?
5000 ÷ 865
5 lengths
= 5.780346820809
Round down
Round up or round down?
5000 football fans are going to a
match. Each stand of the football
stadium holds 865 people. How
many stands will the fans need.
5000 ÷ 865 = 5.780346820809
6 stands
Round up