5.4 ( + rounding recap )

• Wiskunde
• Middelbare school
• vwo
• Leerjaar 1

recap rounding

review a few wrong answers

exercise 20

log in

go to lessonup app

use the code in the bottom left

round the number 8.9595 to the nearest hundredth

1. 8.950
2. 8.95
3. 8.96
4. 8.9600

round 8.9595 to the nearest tenth

1. 8.900
2. 8.9
3. 9
4. 9.0

the sign says Domburg 7.
Why is this a rounded number

in 2016 the number of residents in a city grew from 

84,700 to 86,400. (rounded to the nearest hundred)

1 jan 2016 -------------------------------------------31 dec 2016

84, 700                                                                                      86, 400                                                                               

percentages

how many students is 10% of this class
( rounded up to nearest ones)

calculator

my grandfather told me he would give me 15% of what i earned during the summer as a bonus.

I made 1546 euro that summer

how much did my grandfather gave me?

calculator

make the percentage into a decimal number by dividing by 100

so

0,15 x 1546 = 231.9 --> so i got 231.90 euro

​100​​15​​=0,15

now a few for yourself....

calculator ready

......

calculate 36 % of 190 NO ROUNDING

2.7 % in the calculator will be written as.....

3.9% in the calculator will be written as.......( use your calculator and divide by 100)

make exercise 

47, 50, 51, 52  of chapter 5.4 on page 196 - 197

what percentage of the students in this class are male

students total : 27

male :  11

other : 16.                                                  %

​total​​part​​⋅100

make exercise

55, 56, 58(!), 59, 61 on page 198-200