Question

fractions couple questions

Answer 1

write as decimal
4/5
1/2 (.50 i know that)
4 4/25
7 1/20
5/16
3/16

Answer 2

do you know 1/5 = 0.2 ?

4/5 = 4 * 0.2
=

Answer 3

.8?

Answer 4

YEs!

Answer 5

A far better way to understand where these values come from is by trying to make the denominator of the fractions a power of 10. For example, for 4/5, do the following:\[\frac{ 4 }{ 5 } = \frac{ 4 }{ 5 } * \frac{ 2 }{ 2 } = \frac{ 8 }{ 10 } = 0.8\]In this way you can find the decimal value of a fraction even when you don't know the decimal of the monic form. Makes sense?

Answer 6

How do i find its times 2/2?

Answer 7

For the next one
4 4/25

can you express 4/25 as something/100 ?

Answer 8

Since you want to make the 5 into 10, since 10 is a power of 10. 5*2=10, so we know we want 2/2.

Answer 9

16/100? and ty

Answer 10

great. now 16/100 can be expressed as a decimal without too much difficulty

16/100 = 0.??

Answer 11

.16?

Answer 12

cool.

so you have

4 4/25 = 4 16/100 = 4 + 0.16 =

Answer 13

4.16

Answer 14

That's right!,

can you try

7 1/20

with the same technique:

get the fraction to be something / 100

Answer 15

7 5/100?

Answer 16

@UnkleRhaukus

Answer 17

good, now can you make it into a decimal ?

Answer 18

0.5 +7? 7.5?

Answer 19

now quite

5/10 is 0.5

5/100 is 0.05

Answer 20

notquite *

Answer 21

7.05?

Answer 22

That's better

Answer 23

The last two questions might be easier with the first technique


do you know what 1/16 is in decimal?

Answer 24

if not, do you know 1/8 in decimal ?

or 1/4?

if you know either of these, divide by two to get 1/16

Answer 25

4/16?

Answer 26

waiiiittt 4/100? im so confused

Answer 27

huh?

Answer 28

1/4 = 0.250

1/8 = 0.250/2 = 0.125

1/16 = 0.125/2 =

Answer 29

0.0625?

Answer 30

yes 1/16 = 0.0625

so

5/16 = 5 * 0.0625

and

3/16 = 5 * 0.00625

Answer 31

so what do i do now?

Answer 32

5/16 = 5 * 0.0625
= 5 * 0.0600 + 5 * 0.0020 + 5 * 0.0005

Answer 33

is .3125 my answer?

Answer 34

Good stuff \[\checkmark \]

Answer 35

3/16 can be found the same way

Answer 36

0.03125?

Answer 37

um, no. not 0.03125.

Answer 38

oh .3125

Answer 39

3/16 = 3 * 0.0625
= 3 * 0.0600 + 3 * 0.0020 + 3 * 0.0005
= 0.1800 +0.0060 +0.0015

Answer 40

.1875?

Answer 41

is that right?

Answer 42

YES

Answer 43

is that my answer?

Answer 44

it is.

Answer 45

ty

Answer 46

33/55?

Answer 47

for this one there is a common factor, can you spot it?