numbers

Question 1

how do you find the LCM

Answer 1

1) list all the multiples (times tables) of all the numbers

2) find the smallest number that is all the list

Question 2

when multiplying or dividing + + makes

Answer 2

+

Question 3

what is 0.75 as a fraction and percentage

Answer 3

3/4

75%

Question 4

when multiplying or dividing + and -

Answer 4

makes -

Question 5

how to find prime numbers

Answer 5

all prime numbers end in 1 3 7 9
ignore any numbers other than (2 or 5)
to check if a number is prime - divide by 3 and 7
if it does divide exactly by either 3 or 7 it is a prime

Question 6

what is 1/10 as a decimal and percentage

Answer 6

0.1

10%

Question 7

what is a quarter 1/4 as a decimal and percentage

Answer 7

0.25

25%

Question 8

what does percent mean

Answer 8

per cent mean out of 100 so 2)% means 20 out of 100

20/100

Question 9

what is 1/3 a third as a decimal and percentage

Answer 9

0. 3333

33. 33%

Question 10

what is 25% as a fraction and decimal

Answer 10

1/4

0.25

Question 11

what is 0.333 as a fraction and percentage

Answer 11

1/3

33.33%

Question 12

what is 0.5 as a fraction and percentage

Answer 12

1/2

50%

Question 13

what is 0.25 as a fraction and percentage

Answer 13

1/4

25%

Question 14

what is 1/5 as a decimal and percentage

Answer 14

0.2

20%

Question 15

dividing fractions

Answer 15

1) turn the second fraction upside won

2) multiple the top and bottom numbers

Question 16

what is 10% as a fraction and decimal

Answer 16

1/10

0.1

Question 17

when multiplying or dividing - - makes

Answer 17

+

Question 18

when multiplying or dividing - and +

Answer 18

makes -

Question 19

express x as a percentage of y

Answer 19

divide x by y then multiply by 100
eg 28p as a percentage of 98p
(28/98)x 100 = 28.57

Question 20

what is 0.2 as a fraction and percentage

Answer 20

1/5

20%

Question 21

Find x% of y

Answer 21

turn the percent in to a decimal then multiply
eg find 18% of £4
write 18% as a decimal 0.18
multiply 0.18 x 4 =72p

Question 22

BODMAS

Answer 22

Brackets
Other
Division
Multiplication 
Addition 
Subraction

Question 23

what is 0.1 as a fraction and percentage

Answer 23

1/10

10%

Question 24

multiplying fractions

Answer 24

multiply the top numbers to find the numerator

multiply the bottom numbers to find the denominator

Question 25

what is half as a decimal and percentage

Answer 25

0.5 decimal | 50% percentage

Question 26

what is 20% as a fraction and decimal

Answer 26

1/5 | 20%

Question 27

what is the HCF

Answer 27

Highest common factor | the biggest number the will divide in to al the numbers in the question

Question 28

what is 50% as a fraction and decimal

Answer 28

1/2 | 0.5

Question 29

what is 33.33% as a fraction and decimal

Answer 29

1/3 | 0.333

Question 30

what is 75% as a fraction and decimal

Answer 30

3/4 | 0.75

Question 31

adding and subtracting fractions

Answer 31

``` if the bottom number is the same add or subtract the TOP number only if the bottom number is different make them the same using equivalent fractions then add or subtract the top number only ```

Question 32

what is 3/4 as a decimal and percentage

Answer 32

0.75 | 75%

Question 33

how do you find the HCF

Answer 33

1) list the factors of all the numbers | 2 find the biggest number that is in all the lists

Question 34

find 125% of 600kg

Answer 34

write 135% as a decimal=1.25 | multiply 1.25 x 600kg =750kg

Question 35

what are prime numbers

Answer 35

prime numbers don't digit by anything they only come up in their one times table 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67

Question 36

what is the LCM

Answer 36

Lowest common multiple | the smallest number that will divide by all the numbers in the question