Perimeter workshop

42 cm 42 cm 20 cm 20 cm

42 cm 42 cm 20 cm 20 cm 20 + 20 + 42 + 42 = 124cm

New Zealand mm cm km The classroom m A book School grounds A desk An island A button A button The tip of a pen

New Zealand mm cm km The classroom m A book School grounds A desk An island A button The tip of a pen

50cm 50cm 45cm 105m 15m 15m 105m 40m 40m 50m 50m 35cm 35cm 50cm 50cm 3.5m 3.5m 3.5m 3.5m

145cm 240m 170m 180m 14m 50cm 50cm 45cm 105m 15m 15m 105m 40m 40m 50m 50m 35cm 35cm 50cm 50cm 3.5m 3.5m 3.5m 3.5m

http://www.bbc.co.uk/skillswise/numbers/measuring/perimeter/quiz.shtml there are 3 quizzes at different levels

45cm 20cm 35cm 45cm 105m 20m 25m 25m 35cm 50cm 63cm 30cm 20m 40cm

45cm 20cm 35cm 45cm 105m 20m 25m 25m 35cm 50cm 63cm 30cm 145cm 210cm 160m 20m 226cm 40cm

40cm 20cm 45cm 15cm 20cm 15cm

40cm 20cm 45cm 15cm 20cm 15cm 15 + 15 +15 + 15 + 15 + 15 + 15 + 15 = 120 20 + 20 +20 + 20 + 20 + 20 + 20 + 20 = 160 45 + 45 +45 + 45 + 45 + 45 + 45 + 45 = 360 120 + 160 +360 = 640cm P= 640cm

35m 25m 35m 10m 25m 25m 35m

35m 25m 35m 10m 25m 25m 35m 25 + 25 +25 +25 + 25 + 25 + 25 + 25 + 25 +25 + 25 + 25= 300 20 + 20 +20 +20 = 80 35 + 35 +35 +35 + 35 + 35 +35 + 35 +35 +35 +35 +35 = 420 10 + 10 +10 +10 = 40cm 300 + 80 +420 +40 = 840 P= 840m

Class One Office Block Class Three School Field Class Two Class Four G A R D E N 1 G A R D E N 2 11m 7m 9m 14m 4m 5m 11m 7m 7m 14m 19m 10m 15m 6m Hall and ICT Centre 22m 5m 12m 6m 13m 1m 5m 13m

Class One Office Block Class Three School Field Class Two Class Four G A R D E N 1 G A R D E N 2 11m 7m 9m 14m 4m 5m 11m 7m 7m 14m 19m 10m 15m 6m Hall and ICT Centre 22m 5m 12m 6m 13m 1m 5m 13m Office Block 9 + 4 + 5 + 9 + 5 = 32m Hall 5 + 12 + 22 + 6 + 6 +17 = 68m 11 + 7 +11 + 7 = 36m 14 + 7 +14 + 7 = 42m 19 + 10 +19 + 10 = 58m 15 + 6 +15 + 6= 42m 11 + 7+11 + 7= 36m 13 + 1+13 + 1= 28m 13 + 5+13 + 5= 36m

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Perimeter workshop

by Jacqui Sharp on Apr 19, 2009

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