15 Length


We are learning to: Rename measures of length. and irregular shapes.


Complete investigations involving the perimeter of regular Use and interpret scales on plans. Day One Study the steps used to solve the problem in the example below.


Sarah cycled 12 km in 45 minutes. How far could she cycle in 2 hours if she maintained the same speed throughout?


Circle the numbers and keywords: 12 km, 45 minutes, 2 hours Link with operation needed (+, −, × or ÷): ÷, ×, +. Use a strategy: Visualise. This bar model represents 1 hour:


1 hour Top tip:


Sarah can cycle more than 12 km in one hour. I doubled this to find my estimate.


4 km 4 km


Estimate and calculate: My estimate: over 24 km


4 km


3 4 of an hour = 12 km


1 hour = 16 km


Answer: 32 km


Summarise and check how you got your answer: I worked out how far Sarah could cycle in 1 full hour. I doubled this to find the distance that she could cycle in 2 hours.


Try these. 1


If Olivia can run 2 km 500 m in 40 minutes, how far could she run in 1 hour and 40 minutes?


2


Olivia’s friend Shane can run 3.6 km in one hour. What is the difference between how far he and Olivia run in 1 hour and 40 minutes?


3


Zach and Fred ran a combined distance of 285 m in one minute. The difference between the distances that they ran was 11 m. If Zach ran farther, what distance did each boy run?


64 Strand: Measures Strand Unit: Length


Answer:


Marks:


/2


Answer:


Marks:


/2


Answers: Zach: Fred:


Marks: Today’s Marks:


/2 /6


Week 15


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