Page 219 - SK Year 5 Mathematics DLP

1
8 km
Ashley’s 4 school
home
2 Jeera’s
home
Based on the diagram above, the distance of Ashley’s home to school is

3 times the distance of Jeera’s home to school. What is the distance, in m,
from Jeera’s home to school?

1
Solution The distance of 8 km Draw the
Ashley’s home 4 diagram. Write
the number
The distance of sentence.
Jeera’s home ?
1
8 km ÷ 3 = m
4
1 250
Convert 8 km 1 33
4 8 km = ( × 1 000) m
to m. 4 4
1 2 7 5 0 m
1 3 8 2 5 0 m
1 − 6 Check
2 5 0 m 2 2 2 1
× 3 3 − 2 1 2 7 5 0 m
1 1 5 × 3
7 5 0 − 1 5
+ 7 5 0 0 0 0 8 2 5 0 m

1 8 2 5 0 m − 0
8 km ÷ 3 = 2 750 m
4 0
The distance from Jeera’s home to school is 2 750 m.

3 In conjunction with the recycling campaign, Underline the
5 Meteor pupils collected 4.67 kg of cans. The mass important information.
of paper collected is 12 times the mass of cans.
Calculate the mass, in g, of paper collected.
1 1
Solution 12 × 4.67 kg = g 4 6 7 0 g
× 1 2
Convert 4.67 kg = (4.67 × 1 000) g 1 1
4.67 kg to g. = 4 670 g 9 3 4 0

+ 4 6 7 0 0
5 6 0 4 0 g
The mass of paper collected is g.

• Show various problem-solving strategies such as constructing 211
5.4.1 a table or simulation.
• Discuss the method to check the answer for example 3.