Karen Morrison and Nick Hamshaw Solutions for Exercise 4: Exercise 13.4

The number $0.5$ has been rounded to the degree of accuracy nearest to$1 dp$ . Find the upper and lower bounds in each case.

The number $12.34$ has been rounded to the degree of accuracy nearest to$2 dp$ . Find the upper and lower bounds in each case.

The number $132$ has been rounded to the degree of accuracy nearest to $3 sf$ . Find the upper and lower bounds in each case.

The number $0.134$ has been rounded to the degree of accuracy nearest to $3 sf$ . Find the upper and lower bounds in each case.

What limits do the actual mass of the lion lie if Anne estimates that the mass of a lion is $300 kg$. Her estimate is correct to the nearest $100 kg$. 

In a race, Nomatyala ran $100 m$ in $15.3 seconds$. The distance is correct to the nearest metre and the time is correct to one decimal place. Write down the lower and upper bounds of the actual distance Nomatyala ran.

In a race, Nomatyala ran $100 m$ in $15.3 seconds$. The time is correct to one decimal place. Write down the lower and upper bounds of the actual time taken.

The length of a piece of thread is $4.5 m$ to the nearest $10 cm$. The actual length of the thread is $L cm$. Find the range of possible values for $L$.