Page 153 - SK Year 5 Mathematics DLP

Years and months

1 The duration to complete three phases of
Indah Housing Project is shown below.

1
1
Phase 1 2 years Phase 2 3 years Phase 3 5 years 9 months
2 4

a Calculate the total duration for Phase 1 and Phase 2.
1
1
2 years + 3 years = years
2 4
1
1
1
2 years + 3 years = 2 1 × 2 years + 3 years
2 4 2 × 2 4
1
2
= 2 years + 3 years
4 4
3
= 5 years
4
3
1
1
2 years + 3 years = 5 years
2 4 4
3
The total duration for Phase 1 and Phase 2 is 5 years.
4
b Determine the total duration, in years and months,
for Phase 1 and Phase 3.
Is the
1
2 years + 5 years 9 months = years months calculation
2 correct?
7 years 14 months Discuss.
year month
2 5 = 7 years + 12 months + 2 months
+ 5 9 = 7 years + 1 year + 2 months
7 14 = 8 years 2 months

1 1 145
• Stress that is equal to 0.5 and relate that year is equal to
4.3.1 (iii) 2 2
6 months.