Page 174 - SK Year 5 Mathematics DLP

SOLVE THE PROBLEMS

1 The diagram shows a packet

of curry paste and a packet of
potato crisps bought by Vimala.
Calculate the shelf life, in days, of
the curry paste.
Date of manufacture:
9.12.2019
Expiry Date:
8.2.2021

Understand the Date of manufacture: 9.12.2019
problem Expiry date: 8.2.2021
Find out the shelf life, in days, of the curry paste.

Plan the date of
strategy manufacture shelf life expiry date

Solve
1 1 1 1
9.12.2019 to 31.12.2019 31 days – 9 days + 1 day = 2 3 days
23 days
Number of days in 2020 = 366 days
3
6 6 days
3 1 days
Number of days in January 2021 = 3 1 days
1.2.2021 to 8.2.2021 8 days – 1 day + 1 day = + 8 days
8 days
2 8 days
Total days = 4 428 days

Check Use a calendar to check your answer.

The shelf life of the curry paste is 428 days.

Date of
This information is found on
the packet of potato crisps above. manufacture:
Calculate the shelf life, in days, 17.02.2020
of the crisps. Expiry date:
17.08.2020

166 • Emphasise that the expiry date on food products indicates
4.4.1
the shelf life as this will help consumers make the right choice.