# Maths GCSE

HideShow resource information
Formula for finding Distance
Distance= Speed x Time
1 of 47
Formula for finding Time
Time= Distance/Speed
2 of 47
Formula for finding Speed
Speed = Distance/Time
3 of 47
Iain walked from his parents' farm into town at a steady speed of 5km/h. The journey took 3 hours. How far did Iain walk?
Distance = Speed x Time. Distance = 5 x 3. Distance = 15km
4 of 47
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
Distance = Speed x Time. Distance = 8 x 4. Distance = 32km. Shona has travelled 32km.
5 of 47
Kelly runs from 4.50pm until 5.20pm at an average speed of 7km/h. How far did she go?
Distance = Speed x Time. Distance = 7 x 0.5. Distance = 3.5km. Kelly ran 3.5km.
6 of 47
Alan travels 100km in 5hrs. Find his average speed in km/h.
Speed = Distance/Time. Speed = 100 \ 5. Speed = 20km/h. Alan's average speed is 20km/h
7 of 47
Scott cycles at 4mph and covers a distance of 13 miles. How long does his journey take?
Time = Distance/Speed. Time = 13 \ 4. Time = 3.25hrs. But we don't write 3.25 hours. The answer should be in hours and minutes. So the answer is 3hrs 15mins.
8 of 47
How do we know if we round up or down?
The rule is, if the next digit is: 5 or more, we 'round up'. 4 or less, it stays as it is.
9 of 47
23745 to the nearest thousand
24000.
10 of 47
23745 to the nearest hundred
23700.
11 of 47
What is 23745 rounded to the nearest ten?
23750.
12 of 47
Write 2.6470588 to 2 decimal places (dp).
2.65
13 of 47
Round off the number 3.9762645 to 1 dp.
4.0
14 of 47
What does the word significant mean?
having meaning
15 of 47
What would you get if you wrote the number 368249 correct to 1 significant figure?
400000
16 of 47
What would you get if you wrote the number 0.00245 correct to 1 significant figure?
0.0000059
17 of 47
What is 7.994 to two significant figures?
8.0
18 of 47
How would you get an approximate answer for Equation: 386062 x 0.007243 ?
Equation: 400000 x 0.007 = 2800
19 of 47
What is a ratio?
A ratio is a way to compare amounts of something.
20 of 47
There are 15 girls and 12 boys in a class. What is the ratio of girls to boys? Give your answer in its simplest form.
So the simplest form of the ratio is 5:4
21 of 47
A newspaper includes 12 pages of sport and 8 pages of TV. What is the ratio of sport to TV? Give your answer in its simplest form.
22 of 47
Anna has 75p. Fiona has 1.20 . What is the ratio of Anna's money to Fiona's money, in its simplest form?
So the ratio is 5:8.
23 of 47
Twelve pencils cost 72p. Find the cost of 30 pencils.
30 pencils cost 1.80 .
24 of 47
Jenny buys 15 felt-tip pens. It costs her 2.85 . How much would 20 pens have cost?
25 of 47
What is a prime number?
A number that can only be divided by 1 and its self.
26 of 47
What are the first 10 prime numbers?
2,3,5,7,11,13,17,19,23 and 29.
27 of 47
What does this sign mean '='
Equals
28 of 47
What does this symbol mean '>' ?
Less than
29 of 47
What does this symbol mean '
More than
30 of 47
Divide 9.1 by 7
1.3
31 of 47
Divide 6.4 by 0.4
6.4 / 0.4 = 16
32 of 47
Divide 5.39 by 1.1
4.9
33 of 47
3.5 × 19
66.5
34 of 47
9.2 × 0.8
7.36
35 of 47
Subtract 0.03 from 1.1
1.07
36 of 47
7.005-0.55
6.455
37 of 47
2.752
38 of 47
8.325
39 of 47
What do two fractions have to have the same of when adding and subtracting?
The same common denomintar
40 of 47
1/5 + 2/5
3/5
41 of 47
5/6 - 1/6
4/6 = 2/3
42 of 47
1/4 + 2/5
13/20
43 of 47
2/3 - 1/4
BULLSHIT .......................................................................................5/12
44 of 47
(True or False) The inequality |x + 1| < 0 has no solution.
TRUE
45 of 47
(True or False) If a and b are negative numbers, and |a| < |b|, then b - a is negative.
TRUE
46 of 47
(True or False) The equation 2x + 7 = 2(x + 5) has one solution
FALSE (2x + 7 = 2x + 10 , 7 = 10 no solution)
47 of 47

## Other cards in this set

### Card 2

#### Front

Formula for finding Time

#### Back

Time= Distance/Speed

### Card 3

#### Front

Formula for finding Speed

### Card 4

#### Front

Iain walked from his parents' farm into town at a steady speed of 5km/h. The journey took 3 hours. How far did Iain walk?

### Card 5

#### Front

Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?