Question

A truck travels 627 miles on Monday, 853 miles on Tuesday, and 485 miles on Wednesday. Estimate the total number of miles the truck has traveled on these three days by rounding each number to the nearest ten. The truck has traveled about ____ mile

Answer 1

Write out the miles traveled by the truck from Monday to Wednesday

`\begin{gathered} On\text{ Monday=627miles} \\ On\text{ Tuesday=853miles} \\ On\text{ Wednesday=485miles} \end{gathered}`

Round off each of the journey traveled to the nearest tens

`On\text{ Monday=627miles}\approx630miles(nearest\text{ tens)}`
`On\text{ Tuesday=853miles}\approx850miles(nearest\text{ tens)}`
`On\text{ Wednesday=485miles}\approx490miles(nearest\text{ tens)}`

The total number of miles for the approximation would be

`\begin{gathered} \text{Total miles} \\ =630+850+490 \\ =1970\text{miles} \end{gathered}`

Hence, the truck has traveled about 1970miles