Math exam!

Question 1

what does divisible mean?

Answer 1

when a number can be divided by another number with no remainder

Question 2

divisibility rule for 2

Answer 2

if the last digit is an even number

Question 3

divisibility rule for 3

Answer 3

the sum of the digits is divisible by 3

Question 4

divisibility rule for 4

Answer 4

if the number formed by the last two digits in a number is divisible by 2 at least twice

Question 5

divisibility rule for 5

Answer 5

if the last digit ends with 5 or 0

Question 6

divisibility rule for 6

Answer 6

if the number is divisible by 2 and 3

Question 7

divisibility rule for 8

Answer 7

if the number if divisible by 2 at least three times

Question 8

divisibility rule for 9

Answer 8

if the sum of the digits is divisible by 9

Question 9

divisibility rule for 10

Answer 9

last digit is 0

Question 10

multiples of 3

Answer 10

3,6,9,12,15,18

Question 11

equivalent fraction for 2/4

Answer 11

1/2, 4/8, 8/16, 10/20

Question 12

what is radius

Answer 12

the middle to any point on a circle (r)

Question 13

what is diameter

Answer 13

left to right of a circle right through the centre (d)

Question 14

relationship between radius and diameter

Answer 14

radius is half of the diameter
diameter x 2 = radius

Question 15

what is circumference

Answer 15

distance around a circle (c)

Question 16

what is pi

Answer 16

the ratio of the circumference of a circle to its diameter (π)

Question 17

what does pi equal?

Answer 17

3.14 or 22/7

Question 18

formula for c

Answer 18

π x diameter= πd

Question 19

formula for area

Answer 19

A = πr2