Page 16 - steps 3b.pdf

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• Writing lengths •• ' . I strips of paper I • Length problems • • • • • •

~:l.N~I'~
PAGE 22 II] Write these lengths in centimetres. Try to work out the answers in your head first,
even if you choose materials to help you .
aim 10cm b 4m 83cm c 8m 43cm d 9m 27cm
II] Harry is 97 cm tall.
His Dad is twice as tall.
[]] Write these lengths in metres and centimetres.
What height is his Dad? 2
a 187cm b 220cm c 746cm d 309cm
[]] Pam's mum says she is
137cm 36 cm taller than Pam. Ii
@] Make eight more triangles like this. If Mum is 154cm tall,
1 m 37cm @] what height is Pam?
, . 'J The kitchen table is square. Each side of the table-top
is 60 cm long . What is its perimeter?
....• , j'" ••. ' . . . . I ..
~ ..... '.~ ... ~~, ...•. '.' •... "" P-
v.' " .. .. ' ~ GJ Mum bought 1·6 m of red ribbon for Pam's hair.
100 cm + 30 cm + 7 cm Pam cut it into four equal lengths. ~
GJ Cut strips of paper How long is each piece of ribbon? ~~
to these lengths. ~
[]] Harry explained, 'The swimming pool is O·g m
at the shallow end and 3·3 m at the deep end.'
How much deeper is it
a Compare pairs of these strips. at the deep end? ~~,
How many differences in length
~~'.':::- -~.~~-
can you find? - ~ ~~. ' 0-.· ...
-
~ ..... - Show how you work out the answer.
~
~.
b How many different lengths can you find ~ ~
by fitting two or more strips together? Pam said, 'I can swim thirteen lengths of the pool without stopping .'
Each length of the pool is 25 m. How for can Pam swim without stopping?
~ 1 STEPS3b:9! I STEPS3b:9! S!

rn 00 [!] rn [gJ 00

a 110cm b 483cm Open: drawing eight Practical: cutting 1m Q4cm 1m 18cm 2m 40cm
triangles similar to: strips of paper of
c 843cm d Q27cm
245cm lengths 10cm, 20cm, [!] ~ Challenge
60cm and 70cm
[gJ 40cm 2.4m or 2m 40cm 25m x 13 = 325m
a Comparing pairs of (1/3 a)
2m 45cm/
a 1m 87cm strips to find
b 2m 20cm differences in length.
b Fitting two or more
c 7m 46cm ~
200cm + 40cm + 5cm strips together to
d 3m Qcm make different lengths.
(1/3 a,b,c) (1/3 a,b)