Unit 4 Measurement Worksheet Page 29
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48L E S S O N
Measuring Perimeter
in Centimetres
5 cm
Ellen is gluing coloured wool
around this picture frame.
What length of wool does
7 cm
7 cm
Ellen need to go around
the frame?
The distance around the
frame is its perimeter.
5 cm
You will need a ruler.
➤ Look at 12 cm on the ruler.
Look for something that you think
has a perimeter of 12 cm.
Measure the object to check your
estimate.
➤ Look for another object with a
perimeter of 12 cm.
➤ Now, look for objects with a
perimeter of
• 20 cm
• 50 cm
Record your work.
and
S h o w
S h a r e
Share your work with another pair of classmates.
Show how you measured a perimeter.
L
F
160
Estimate and measure perimeter in centimetres.
ESSON
OCUS
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