Page 214 - SK Year 5 Mathematics DLP

4 BBB

HAND
CLEAN WORLD FACTORY HAND 1
SANITIZER 50 m SANITISER 0.4
B Sanitiser 2
BB
,
a Calculate the volume, in m of 100 bottles of BB hand sanitiser.
100 × 0.4 = m

Method 1 Method 2
0 .4 40 = (40 × 1 000) m 0.4 = (0.4 × 1 000) m
× 1 0 0 = 40 000 m = 400 m
4 0 .0
100 × 400 m = 40 000 m
100 × 0.4 = 40 000 m

The volume of 100 bottles of BB hand sanitiser is 40 000 m .

b What is the volume, in m , of 1 000 bottles of BBB hand sanitiser?

500 1
1 000 × = do cancellation
2 Calculate the
1 = ( × ) m convert unit volume, in of 10
,
= m bottles of
B hand sanitiser.

The volume of 1 000 bottles of BBB hand sanitiser

is m .

1 Solve these.

a 16 × 0.39 = b 13 × 5.7 = m c 25 × 0.416 = m
1 7
d 48 × 2 = m e 100 × 6 = m f 1 000 × 7.8 m =
4 10
2 Complete these.
3
1 000 × 75 m 10 × 0.75 100 ×
4
as as
m

206 • Vary questions such as using a mind map to reinforce
5.3.4 pupils’ understanding.
• Instil moral values such as taking care of hygiene and health.