Calculate perimeters3-eu-west-1.amazonaws.com/smartfile/8f31e6980b1ab... · Rosie The perimeter is...
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Calculate perimeter 1 Work out the perimeter of each shape. a) perimeter = cm b) perimeter = mm c) perimeter = m 2 Rosie and Eva work out the perimeter of the shape below. Who is correct? How do you know? 3 Tick the shapes with a perimeter of 16 cm. © White Rose Maths 2019 5 cm 5 cm 3 cm 3 cm 8 cm 2 cm 40 mm 40 mm 20 mm 6 cm 4 cm 3m 6 + 4 = 10, so the perimeter is 10 cm. Rosie The perimeter is 20 cm. Eva 10 cm 6 cm 6 cm 2 cm
Transcript of Calculate perimeters3-eu-west-1.amazonaws.com/smartfile/8f31e6980b1ab... · Rosie The perimeter is...
Calculate perimeter
1 Workouttheperimeterofeachshape.
a)
perimeter= cm
b)
perimeter= mm
c)
perimeter= m
2 RosieandEvaworkouttheperimeteroftheshapebelow.
Whoiscorrect?
Howdoyouknow?
3 Ticktheshapeswithaperimeterof16cm.
©WhiteRoseMaths2019
5cm
5cm
3cm3cm
8cm
2cm 40mm
40mm
20mm
6cm
4cm
3m
6 + 4 = 10, so the perimeter is
10 cm.
Rosie The perimeter is 20 cm. Eva
10cm
6cm
6cm
2cm
b)
perimeter=
Whatdoyounotice?
6 Thisrectanglehasaperimeterof18cm.
Workoutthelengthofsidea.
perimeter=18cm
sidea=
4 Whichshapehasthelongestperimeter?Tickyouranswer.
Showallyourworkings.
5 Workouttheperimeteroftheseshapes.
a)
perimeter=
©WhiteRoseMaths2019
4cm
4cm
3cm3cm
20mm 20mm
20mm 20mm
20mm
6cm 6cm
2cm
8cm
3cm
5cm
7cm
2cm
9cm
70mm
80mm
20mm10mm
30mm
50mm
30mm
50mm
2cm
6cm
a