Books | Price |
---|---|
4 | £11 |
8 | £22 |
9 | £23 |
Books | Price |
---|---|
4 | £11 |
8 | £22 |
1 | £2.75 |
9 | £24.75 |
Boxes | 1 | 2 | 4 | 8 | 16 |
Plants | 35 | 70 | 140 | 280 | 560 |
Boxes | 1 | 10 | 2 | 6 | 16 |
Plants | 35 | 350 | 70 | 210 | 560 |
Mangoes | 2 | 4 | 1 | 5 |
Price | £3 | £6 | £1.50 | £7.50 |
1 | P = (a + b + 3) – 3 + (a + b + 3) – 3 | A | On the green triangle it’s only a and b because the 3 is missing. On that one it’s 3 and b and a but then you’ve got to take 3 away again. | |
2 | (a + b) + 3 + b+ a – 3 | B | The perimeter is 3 add side b then it’s the little bit down there, then it’s add side b and side a. That bit is what’s left over when you put the 3 next to a. | |
3 | P = 3 + b + (a – 3) + b + a | C | To make the perimeter – for each whole triangle it’s a plus b plus 3, but it’s missing 3 from each one. | |
4 | (a + b + 3) + b + (a – 3) | D | Count all the sides, it’s a plus b plus 3, doubled, and then you miss out 3 twice. | |
5 | 2 (a + b + 3) – 2 x 3 | E | That side is the same as the missing side so you have all of one triangle. For the other triangle you have side b and just a bit down side a, a less 3. |
Younus takes three large letters to the Post Office. He pays with a £20 note. He gets change of £14.80. How much did each letter cost to post?
a | b | 3a – b | 2a + b | Write your inequality or equation here |
1 | 2 | 1 | 4 | 3a – b < 2a + b |
10 | 3 | |||
6 | 3 |
a | b | 3a – b | 2a + b | Write your inequality or equation here |
1 | 2 | 1 | 4 | 3a – b < 2a + b |
10 | 3 | 27 | 23 | 3a – b > 2a + b |
3a – b | 2a + b | 15 | 15 | 3a – b > 2a + b |
Position | n | ||||||
O | T | T | F | F | S | ? | |
Term (fraction sequence) | 1 | 1/4 | 1/9 | 1/16 | 1/25 | 1/36 | 1/n^{2} |
Sequence | 37th term | Position-to-term rule |
5, 10, 15, 20, 25 | 185 | |
3, 6, 12, 24, 48 | ||
1, 1/4, 1/9, 1/16, 1/25, ... | 1/ 37^{2} | |
O, T, T, F, F | T | take the first letter of the position number |
Position | 1 | 2 | 3 | 4 | 10 | 26 |
Number of matches |
Position | 1 | 2 | 3 | 4 | 10 | 26 |
Number of matches | 7 | 10 | 13 | 16 | ||
3n | 3 | 6 | 9 | 12 | 30 | 78 |
Advantages | Disadvantages | |
---|---|---|
Population | ||
Sample |
Flavour | Frequency |
Chocolate | 14 |
Vanilla | 5 |
Strawberry | 7 |
Other | 20 |
Number of DVDs | Tally | Frequency |
---|---|---|
0–5 | ||
6–10 | ||
11–20 | ||
21–40 | ||
Over 40 |
Like football | Do not like football | |
---|---|---|
Like rugby | 9 | 2 |
Do not like rugby | 5 | 4 |
Left-handed | Right-handed | |
---|---|---|
Likes art | 2 | 12 |
Do not like art | 1 | 10 |
Hours (h) spent on phone | Tally | Frequency |
---|---|---|
0 ≤ h < 10 | ||
10 ≤ h < 20 | ||
20 ≤ h < 30 | ||
More than 30 |
Average | Advantages | Disadvantages |
---|---|---|
Mean | Takes all values from the data set into consideration | Can be skewed by very large or very small values in the data set |
Median | Very large or very small values do not affect it | It can be very slow to calculate for a large data set |
Mode | The only average which can be used for non-numerical data |
Maths | 77 | 78 | 76 | 78 | 78 | 76 | 80 | 79 | 78 | 80 |
English | 67 | 73 | 101 | 68 | 66 | 85 | 69 | 86 | 101 | 64 |
Maths | English | |
Mean | 78 | |
Median | 78 | |
Mode | 78 | |
Range | 4 |
Maths | English | |
Mean | 78 | 78 |
Median | 78 | 71 |
Mode | 78 | 101 |
Range | 4 | 37 |
Instrument | Angle | Frequency | |
---|---|---|---|
Guitar | 90° | 90/360 × 48 = | 12 |
Trumpet | 15° | 15/360 × 48 = | 2 |
Drums | 60° | 60/360 × 48 = | 8 |
Flute | 45° | 45/360 × 48 = | 6 |
Piano | 150° | 150/360 × 48 = | 20 |