Page 139 - SK Year 5 Mathematics DLP

Centuries to decades This mobile phone was
2
introduced century
1 5
ago.

2
century?
5

2
Convert century to decades.
5
2
century = decades
5

Method 1 Method 2
2
2
2
5 century 2 century = ( × 10) decades
5 5
1
1 1 1 1 1 = 4 decades
5 5 5 5 5

10 decades
4 decades
2
5 century = 4 decades

2
5 century is 4 decades. 1 century = 10 decades

× 10
7 century(ies) decade(s)
2 3 centuries = decades
10
7 37
3 centuries = ( × 10) decades
10 10

= 37 decades

7
3 centuries = 37 decades
10

• Ask pupils to talk about antique items that are more than 10 years
1 131
4.2.1 (v) or century old for the activity of converting the units of time to
10
decades.