I love Maths 4

Conversions

100

3km to metres

3000m

200

29cm to millimetres

290mm

300

5.5m to millimetres 

5500mm

400

3.8cm to metres

0.038m

500

12.34mm to kilometres

0.00001234 km

Like terms

100

4a + 2a

6a

200

3x² + 7x²

10x²

300

6p + 2c +7p +4c

13p +6c

400

8t -6j + 11t +4j -3t

16t -2j

500

2a²-4a + 5a -3a²

-a²+a

Probaility

100

There are 4 blue, 5 green and 3 red marbles.

Find pr(red)

3/12 =1/4

200

There are 4 blue, 5 green and 3 red marbles.

Find Pr( green or red)

8/12 = 2/3

300

There are 4 blue, 5 green and 3 red marbles. 

Pr (blue)'

8/12 = 2/3

400

There are 4 blue, 5 green and 3 red marbles. If 2 marbles are selected (and the marble is replaced) find the Pr( green and red).

15/144

500

There are 4 blue, 5 green and 3 red marbles. If 2 marbles are selected (and the marble is replaced) find the Pr( Blue)'.

64/144 =16/36= 8/18 =4/9

Statistics

100

Find the median of the following data set:

2, 5, 8, 10, 14, 18, 24

10

200

Find the mode in the following data set:

3, -4, 8, 12, 12, -4, -4, 16, 7, 9, -4

-4

300

Find the mean of the following data:

12, 16, 9, 17, 13, 11, 5, 8, 13,

11.56

400

Find the mean of the following data set:

-8, -6, -4, -2, -1, 0, 1, 2, 4, 6, 8 

0

500

find the median of the following data set:

-5, 13, -9, 12, 19, -11, 7, 12

9.5

Solve for x

100

x + 4= 10

x= 6

200

x+9= 5

x=-4

300

3x+2 = 11

x=3

400

2(x-3) = 8

x= 7

500

x²/2 = 8

x=4