The document provides instructions for solving percentage problems involving shading portions of grids for KS2 math SATs exams. Students are asked to shade in a given percentage of squares in a grid by first counting the total number of squares and then calculating the percentage of that total to determine how many squares to shade. Examples are provided for shading 20%, 25%, and other percentages of grids with step-by-step workings shown. Practice problems are then given for students to try on their own.

1. How To Do KS2 Maths SATs
Type Questions
(Paper B – Calculator Allowed)
Percentages 1: Shading In
A Percentage Of A Shape
For more maths help & free games related
to this, visit: www.makemymathsbetter.com

2. In a SATs Paper B you might be asked to shade in a
percentage of a shape:

3. For example shade in 20% of this grid:

4. For example shade in 20% of this grid:
First count the number of squares.

5. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.

6. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30

7. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30
To find 20% of 30, you need to remember that 20% is equivalent to 1/5

8. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30
To find 20% of 30, you need to remember that 20% is equivalent to 1/5
So 20% of 30 = 1/5 of 30

9. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30
To find 20% of 30, you need to remember that 20% is equivalent to 1/5
So 20% of 30 = 1/5 of 30 = 6

10. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30
To find 20% of 30, you need to remember that 20% is equivalent to 1/5
So 20% of 30 = 1/5 of 30 = 6
Therefore you need to shade in 6 of the squares.

11. For example shade in 20% of this grid:
First count the number of squares. There are 30 in this example.
You therefore need to find 20% of 30
To find 20% of 30, you need to remember that 20% is equivalent to 1/5
So 20% of 30 = 1/5 of 30 = 6
Therefore you need to shade in 6 of the squares.

12. Another example would be, shade in 25% of this grid:

13. Another example would be, shade in 25% of this grid:
First count the number of squares.

14. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.

15. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24

16. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24
To find 25% of 24, you need to remember that 25% is equivalent to 1/4

17. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24
To find 25% of 24, you need to remember that 25% is equivalent to 1/4
So 25% of 24 = 1/4 of 24

18. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24
To find 25% of 24, you need to remember that 25% is equivalent to 1/4
So 25% of 24 = 1/4 of 24 = 6

19. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24
To find 25% of 24, you need to remember that 25% is equivalent to 1/4
So 25% of 24 = 1/4 of 24 = 6
Therefore you need to shade in 6 of the squares.

20. Another example would be, shade in 25% of this grid:
First count the number of squares. There are 24 in this example.
You therefore need to find 25% of 24
To find 25% of 24, you need to remember that 25% is equivalent to 1/4
So 25% of 24 = 1/4 of 24 = 6
Therefore you need to shade in 6 of the squares.

21. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
1)
Shade in 10% of this grid:

22. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
1)
Shade in 10% of this grid:
10% of 30 = 3

23. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
1)
Shade in 10% of this grid:
10% of 30 = 3

24. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
2)
Shade in 50% of this grid:

25. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
2)
Shade in 50% of this grid:
50% of 36 = 18

26. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
2)
Shade in 50% of this grid:
50% of 36 = 18

27. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
3)
Shade in 30% of this grid:

28. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
3)
Shade in 30% of this grid:
30% of 30 = 9

29. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
3)
Shade in 30% of this grid:
30% of 30 = 9

30. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
4)
Shade in 75% of this grid:

31. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
4)
Shade in 75% of this grid:
75% of 20 = 15

32. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
4)
Shade in 75% of this grid:
75% of 20 = 15

33. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
5) Shade in 90% of this grid:

34. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
5) Shade in 90% of this grid:
90% of 40 = 36

35. Now, try some by yourself to see if you have understood. Click to
reveal the answer:
5) Shade in 90% of this grid:
90% of 40 = 36

36. That’s it for now......
for more help with your maths,
try my book:
mastering multiplication tables
on amazon.com