Measures of center
What is the mean ?
16,20,24,28,32,36
* Mean = add + divide
16+20+24+28+32+36 = 156
* Divide sum by how ever many numbers there are.
156÷6= 26
258 x 67 = ?
258 x 67 = 258
3+3x2 = ?
3+3x2= 9
12/4
= 3
what is 1/3 in decimals
What is the median ?
15,17,19,21,23,25,27
* The number in the middle
15,17,19,21,23,25,27
Median is 21
1,234 x 56 = ?
1,234 x 56 = 69,104
(5-2)x3+6/2 =
(5-2)x3+6/2 = 7.5
30/5
= 6
1.35-1.45
= -0.1
What is the range ?
98,101,104,107,110
* Range, subtract largest number from smallest
110-98=12
378 x 19 = ?
378 x 19 = 7,182
which one has the greater value
1.6+19x2-17(3x8)
3.(3x7)-5+23-8x2
3.(3x7)-5+23-8x2 has the greater value
100/10
= 10
65.235-35
= 30.235
The mode ?
2,4,6,8,8,10,
* The number that is used the most
2
456 x 25 = ?
456 x 25 = 11,400
(6x7+7-4)45+7-0x3/2= ?
(6x7+7-4)45+7-0x3/2= 145.5
657/6
=109.5
Kayle paints walls, Kayle can 0.25 of a wall in 5 minutes. The room he's painting has 4 same sized walls, how long will it take for him to paint all 4 walls?
it will take 1 hour and 20 minutes
10,15,20,25,30,35,40,45
* Number in the median
10,15,20,25,30,35,40,45
25+20=45÷ 2= 22.5
25,647 x 367 = ?
25,647 x 367 = 9,412,449
(30x4/3+40)x2+13-2 = ?
(30x4/3+40)x2+13-2 = 171
760/2
= 380
3456.162x8=
= 27649.296