Page 159 - SK Year 5 Mathematics DLP

Centuries and years
Estimate the age of the Alor Setar
1 Estimated age in 2021
Clock Tower.

4 3
The Kuala Kangsar 5 century + 10 century = centuries
Clock Tower
4 3
4 century + century
about century old 5 10
5 4 × 2
= century + 3 century
Source: http://rb.gy/uhx8hq 5 × 2 10
8 3
= century + century
The Alor Setar 10 10
Clock Tower 11
= centuries
3 10
about century older
10 1
than the Kuala Kangsar = 1 centuries
10
Clock Tower 4 3 1
5 century + 10 century = 1 centuries
10
1
The estimated age of the Alor Setar Clock Tower is about 1 centuries.
10

7
2 2 centuries + 60 years = years
10
7 7 1
2 centuries = (2 × 100) years + ( × 100) years 270 years
10 10
= 200 years + 70 years + 60 years
330 years
= 270 years

7
2 centuries + 60 years = 330 years
10

1
3 8 centuries + 1 century 35 years = centuries years
2
1 1
8 centuries = 8 centuries + century
2 2 century year
1 50 8 50
= 8 centuries + ( × 100) years
2 + 1 35
1 9 85
= 8 centuries 50 years

1
8 centuries + 1 century 35 years = 9 centuries 85 years
2

• Carry out mental arithmetic activities to convert centuries to years 151
4.3.1 (vi)
and years to centuries.