Page 54 - 01-Yr5_Front cover-ccp.indd

56
• Fractions: add and subtract •••••••
Josie put o fraction or mixed number
~:I•I•H418~ hos a numerator of 1. at each corner of this shape so that ~:M•J&18~
A unitary fl'octlon
they totalled the number in the centre.
For example. } or ~
. PAGE 26 She drew a fraction line to help her. PAGE 27
1 1t
Use cut-up fraction strips from RM 54.
Find, then record, combinations which total 1. Use:
Complete these shapes in the same way. Draw fraction lines if it hetps.
a thirds and sixths b fifths and tenths
c quarters and eighths d quarters, halves and eighths.
Find the missing unitary fractions.
Use strips to help, if you wont. d
b i + t+t+t+ R=1~ l - 2i \ 6
d ~ + h +i+t=1t
t i+~-~-P= i Find the missing fraction or mixed number for these shapes.
Show any workings-out.
3
a Design two more fraction diagrams. 2t
Show how they equal 1. st 1% 10
• Design diagrams to show that:
H
o f+k +f =1 ·02i
bt + i + ~ = 1 1. 2
c %dd =1 .
?
rn

Practical: using cut-up fractions strips from Resource Master 54 to find Open: showing mixed numbers and fractions that add to a given total.
combinations which total 1 . Possible answers include:
a) 2 + £ = 1 b) ~ + !±. = 1 c) 1 + !±.. = 1 d) l + l + 1 = 1 .
3 6 5 10 4 8 4 2 8
b 2f c ~

a _!_ b l_ c l_ d 1-+ l_ e 1- f l_
8 4 3 2 8 s 10

Challenge
Practical: designing fraction diagrams to show totals of 1 .