GCSE Secondary Maths Age 13-17 - Number: Estimating - Explained

The video tutorial explains how to estimate the time required to complete a cycle race across America by rounding given values to one significant figure. It covers the process of rounding distance, speed, and time, and demonstrates how to use these rounded values to calculate the total time and number of days needed for the race. The tutorial emphasizes the importance of rounding in estimation questions and discusses the impact of changes in speed on the calculations.

What is the total distance of the cycle race across America?

What is the average speed of the cyclist in the previous races?

How many hours per day will the cyclist cycle during the race?

What is the estimated distance after rounding to one significant figure?

How do you calculate the time taken to complete the race using distance and speed?

What is the final estimated number of days to complete the race?

How does an increase in average speed affect the estimated time to complete the race?