how to do ks2 maths sats paper b percentage questions (part 2)

Percentages 2: Calculating How Much Of A Grid Is

Shaded

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How To Do KS2 Maths SATs Type Questions

(Paper B – Calculator Allowed)

In a SATs Paper B you might be asked to work out what percentage of a grid is shaded:

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Firstly count up the number of shaded tiles:

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Firstly count up the number of shaded tiles:There are 6

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Firstly count up the number of shaded tiles:There are 6As a fraction: 6/20 of the grid is shaded

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Now convert 6/20 to a fraction with a denominator of 100

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Now convert 6/20 to a fraction with a denominator of 100

620

=

X 5

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Now convert 6/20 to a fraction with a denominator of 100

620 100

=

X 5

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Now convert 6/20 to a fraction with a denominator of 100

620 100

=X 5

X 5

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

Now convert 6/20 to a fraction with a denominator of 100

620

30100

=X 5

X 5

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

This fraction can then be converted directly to a %

620

30100

=X 5

X 5

For example: Here is a grid of 20 tiles. What percentage of the tiles are shaded blue?

This fraction can then be converted directly to a %

620

30100

=X 5

X 5

= 30%

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Firstly count up the total number of tiles.

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Firstly count up the total number of tiles. There are 50.

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Firstly count up the total number of tiles. There are 50.Then count up the number of tiles that are shaded green.

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Firstly count up the total number of tiles. There are 50.Then count up the number of tiles that are shaded green.There are 14

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Firstly count up the total number of tiles. There are 50.Then count up the number of tiles that are shaded green.There are 14As a fraction, this is written as 14/50

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

1450

=

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

1450

=

X 2

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

1450 100

=

X 2

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

1450 100

=X 2

X 2

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

Now convert 14/50 to a fraction with a denominator of 100

1450

28100

=X 2

X 2

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

This fraction can then be converted directly to a %

1450

28100

=X 2

X 2

Another example: Here is a pattern on a grid. What percentage of the tiles are shaded green?

This fraction can then be converted directly to a %

1450

28100

=X 2

X 2

= 28%

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

5

2 5

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

5

2 5 1 0 0=

X 4

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

5

2 5 1 0 0

2 0=

X 4

X 4

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in white?

5

2 5 1 0 0

2 0=

X 4

X 4

= 20%

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in pink?

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in pink?

9

2 0

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in pink?

9

2 0 1 0 0=

X 5

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in pink?

9

2 0 1 0 0

4 5 =

X 5

X 5

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in pink?

9

2 0 1 0 0

4 5 =

X 5

X 5

= 45%

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in blue?

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in blue?

7

2 0

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in blue?

7

2 0 1 0 0=

X 5

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in blue?

7

2 0 1 0 0

3 5 =

X 5

X 5

Now try some by yourself. Click to find the correct answer:What percentage of this grid is coloured in blue?

7

2 0 1 0 0

3 5 =

X 5

X 5

= 35%

That’s it for now......for more help with your maths,

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