Measurement tasks for Friday 5 March 2021
Try to solve the problems independently.
You may use diagrams to explain your thinking.
We will discuss as a group what strategies you used to solve the problems
WALT: use multiplicative and/or additive strategies to solve measurement problems.
A student measures her height with a 30 cm long ruler. She finds that she is four and a half rulers high. How tall is she in cm? 30cmx4=120cm half of 30 is 15 so
120cm + 15 = 135cm
A student is told that they are 1.45 m tall. How tall is this in cm?
1m = 100cm 45 = 45cm 100cm + 45cm = 145cm
If it takes 3 hours to drive 210 km, what was the average speed of the journey?
3h = 210km 210 divide by 3 = 70 So if i go 70km/ph it will take 3 hours to drive 210km So my answer is 70km/ph
A class of 28 is split into small groups. How big can those groups be?
Half of 28 = 14 Half of 14 = 7 28 divided by 7 = 4 So 4 groups of 7 are the most groups the class can have.
A car, travelling at an average speed of 70 km/ph is in a journey of 210 km.
How long will the journey take? 70 x 3 = 210km so the journey will take 3 hours
A long distance swimmer takes 80 strokes to swim 100 metres. He wants to swim across Lake Taupo, a distance of 4200 metres.
a. How many strokes will it take for him to swim across the lake? 80x42 = 3360s
b. If he can swim at a rate of 60 strokes per minute, how many minutes could he swim across the lake in? 3360 divided by 60 = 56m
c. Can he expect to beat the 2015 champion swimmer who crossed the lake in a time of 51 minutes and 48 seconds? No because he crossed the line in 56 minutes
These problems are taken from NZ Maths
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