# D to C Revision Cards

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1. Name the 4 different types of transformations and describe what they mean.
• 1. Translation - move the shape left, right, up
•     or down
• 2. Enlargement - make bigger
• 3. Reflection - mirror
• 4. Rotation - turn
2. What information do you need to give when answering a rotation question?
• 1. Centre of a rotation
• 2. Size of turn (degrees)
• 3. Direction (clockwise/anticlockwise)

check with tracing paper
3. What information do you need to give when answering a reflection question?
Line of reflection (mirror line)
4. What information do you need to give when answering an enlargement question?
• 1. Scale factor (how many times bigger it is)
• 2. Centre of enlargement (draw lines to find it)
5. What information do you need to give when answering a translation question?
• 1. How far left/right
• 2. How far up/down

Write as a vector
6. What is the perimeter of a shape?
The distance all the way around the outside measured in m, cm, mm
7. What is the area of a shape?
The space inside the shape measured in  or
8. How would you construct a perpendicular bisector?
9. How do you bisect an angle?
10. What three things do you need to know about a bearing?
• 1. Start from North
• 2. Measure clockwise
• 3. Always three figures (eg 065)
11. What do angles on a straight line add up to?
180o
12. What do angles in a triangle add up to?
180o
13. What can you say about these angles?
Vertically opposite angles

Same size
14. What can you say about these angles?
Corresponding (F) angles

Same size
15. What can you say about these angles?
Alternate (z) angles

Same size
16. What do angles around a point add up to?
360o
17. How do you calculate 1%?
Divide the number by 100
18. How do you calculate 10%?
Divide the number by 10.
19. How do you multiply two fractions?
• multiply the numerators together
• multiply the denominators together
20. How do you find a fraction of an amount?
Divide the amount by the denominator, multiply the answer by the numerator
21. What fraction is the same as 50%?
22. What fraction is the same as 25%?
23. What fraction is the same at 10%?
24. What fraction is the same as 20%?
25. How do you find the lowest common multiple (LCM) of two numbers?
Write out the times tables for each number

Circle the smallest number that is the same for both
26. How do you write a number as a product of its prime factors?
• prime number tree
27. What is a prime number?
A number that has only two factors
28. List the prime numbers up to 30
2, 3, 5, 7, 11, 13, 17, 19, 23, 29
29. What are the multiples of a number?
All the numbers in the times tables
30. What do you get when you multiply a positive and a negative?
negative number
31. What do you get when you multiply a negative and negative?
positive number
32. What is a square number?
The answer you get when you multiply a number by itself
33. How do you work out the mean of a set of numbers?
Add them all up and divide by the number of numbers
34. How do you work out the median of a set of numbers?
Put the numbers in order, find the middle
35. How do you work out the mode of a set of numbers?
The number that is most common
36. How do you work out the range of a set of numbers?
Subtract the smallest number from the biggest number
37. Describe the relationship of the graph below
As the result in maths increases, the result in science increase
38. What is this graph called? What do you need to remember about it?
Stem and Leaf

• 1. Always write in order
• 2. Always include a key
39. What is this graph called? What do you need to remember about it?
Scatter Graph

Remember to draw a line of best fit through the points (not joining them up)
40. Speed = ?
41. What does solve mean?
Work out what the letter is
42. What does simplify mean?
• Collect like terms
• eg a + a + a = 3a
•     a x a x a = a3
43. What does expand mean?
Multiply out the brackets

eg 2(x + 4) = 2x + 8
44. What does factorise mean?
Put into brackets

eg 3x + 12 = 3(x + 4)
45. How do you find the nth term of a sequence?
• 1. Work out the difference
• 2. Multiply it by n
• 3. Work out what you need to add or subtract
46. What is an expression?
it contains no equals sign

eg 2x + 5y
47. What does substitute mean?
Swap a letter for a number
48. What does value mean?
A number
49. What is this graph called?
Speed distance time graph
50. How do you work out an estimate for the mean of grouped data?
• 1. Find the midpoints
• 2. Frequency x midpoints
• 3. Total of frequency x midpoints
• 4. Total of frequency
• 5. Total of frequency x midpoints divided by total of frequency
 Author: HLHSMaths ID: 221348 Card Set: D to C Revision Cards Updated: 2013-05-27 19:01:44 Tags: Revision Borderline Folders: Description: Revision cards to help increase your grade from a D to a C Show Answers: