Question

How could Erika have used the decimal that she wrote for 1/3 to find the decimal for 2/3

Answer 1

Use your decimal for 1/3 and add it to another 1/3 to get your decimal for 2/3

Explanation:

Answer 2

Erika can twice the decimal value of 1/3 to find the decimal value of 2/3. The decimal value of 2/3 is about 0.67.

Explanation:

Let Erika wrote the decimal value for 1/3 . She needs to use this decimal value to find the decimal value of 2/3.

`(1)/(3)=0.333...`

Write the fraction value 2/3 in the factor 2 and 1/3.

`(2)/(3)=2* (1)/(3)`

Substitute the decimal value of 1/3 in the above equation.

`(2)/(3)=2* (0.333...)`

`(2)/(3)=0.666...`

`(2)/(3)\approx 0.67`

Erika can twice the decimal value of 1/3 to find the decimal value of 2/3. The decimal value of 2/3 is about 0.67.