# Sarin, Hairu and Fatimah make greeting cards for Mother’s Day part 18 (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 will learn the skill of dealing with Math Question Solving, Math Modeling and Problem Sums from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Shape and Area.

You can read the story of Sarin and the siblings making greeting cards for their mother by reading the posting on Sarin, Hairu and Fatimah make greeting cards for Mother’s Day in Welcome page.

You can read the posting on Sarin learns Perimeter, Area and Volume in school(Math Concept) to learn the concept of perimeter, area and volume.

You can read also the posting on Sarin learns concept of ratio in school to understand the concept of Ratio.

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

Upper primary school mathematics question UPQ353

Hairu likes to have his greeting card looks as the figure shown. ABCD below is a rectangle. BD is a straight line. What is the ratio of area X to area Y?

Solution:

Line BD divided the rectangle ABCD to two equal triangles

Similarly, area of triangle a = area of triangle

And area of triangle c = area of triangle d

Hence, the area of rectangle X = the area of triangle Y

The ratio of the area of triangle X to the area of triangle Y = 1 : 1