Page 253 - SK Year 5 Mathematics DLP

2 Initially, the mass of package R and the mass of package T was 1 kg
and 4 kg respectively. Herma put in a honeydew of the mass of 2 kg
inside package R. Calculate the ratio of the current mass of package R
to the current total mass of package R and T.

Solution
Summarise the
information in
Package R T
a table.
Initial mass 1 kg 4 kg
The mass of a honeydew put inside 2 kg none
the package

Current mass ? 4 kg

Find the ratio of the current mass of package R
to the current total mass of package R and T.

Mass of a Draw
Initial mass honeydew diagrams

1 kg 2 kg to represent
the current
the current mass of package R mass.
3 kg

the current mass of package T
4 kg

the ratio of the current mass of package R to the current total mass
of package R and T

:
3 7

The ratio of the current mass of package R to the current total mass
:
of package R and T is 3 7.

What is the ratio of the current total mass of package
R and T to the mass of package T?

245
• Guide pupils to use representations to state the ratios between
7.4.1
two quantities.