# Sarin’s family and Ramadan Part 7 (Math Question)

Standard

The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills of dealing with Math Question Solving, Math Modeling and Problem Sums from Lower Primary School to Upper Primary School level after reading the postings. This posting is a lower primary school math question on Problem Sum.

You can read the postings on Sarin’s family and Ramadan and Sarin’s family celebrating Hari Raya Puasa in Welcome page about story of Sarin’s family during Ramadan and Hari Raya Puasa.

Challenge yourself with the question before look for the given solution‼

Lower primary school mathematics question LPQ57

During Ramadan, Sarin’s father needs to hang up 3 strings of fairy lights in the hall as decoration for Hari Raya Puasa. The 3 strings of lights are in different lengths. String A is 7 m 6 cm. String B is 54 cm shorter than String A. String C is twice as long as String B. What is the total length of the 3 strings of fairy lights?

Solution:

Unit conversion

1m = 100cm

The length of string B = 7m 6cm – 54cm = 6m 106cm – 54cm = 6m 52cm

The length of string C = 2 × 6m 52cm = 12m 104cm = 13m 4cm

Total length of the three strings of fairy lights = 7m 6cm + 6m 52cm + 13m 4cm = 26m 62cm