Maths - Singapore Math

This is a collection of mathematical problems solved in a different way.

Singapore Math 1 - A Grade 5 Problem

Problem Statement

Jeremy bought 8 identical pens and 5 identical notebooks.
The cost of 8 pens is the same as the cost of 5 notebooks.
Each notebook costs 30 cents more than each pen.
How much did jeremy spend altogether ?

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Singapore Math 2 - A Grade 7 Problem

Problem Statement

Mr Rosario bought some apples and oranges.
The ratio of the number of apples to the number of oranges that he bought was 2:5.
He gave 3/4 of the apples to his sister and 34 oranges to his brother.
The ratio of the number of apples to the number of oranges is now 2:3.
How many apples did Mr Rozario buy ?
How many oranges did Mr Rozario buy ?

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Singapore Math 3 - A Grade 7 problem

Problem Statement

There are 8 more girls than boys in a particular class.
3/5 of the boys and 1/3 of the girls were born in Georgia.
If the number of boys who were born in Georgia
is the same as the number of girls who were born in Georgia,
how many students (boys and girls together) in that class were born in Georgia ?

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