Fractions, Decimals and… · JHS3 Mathematics

Lesson notes

Learning Objectives

Indicator: B9.1.3.1.3 - Review word problems involving basic operations on fractions.

By the end of the lesson, learners can:

Identify the operation (addition, subtraction, multiplication or division) needed to solve a word problem involving fractions.
Solve multi-step word problems involving fractions of given quantities and express answers in simplest form.
Translate percentage word problems into fraction equations and solve them accurately.
Verify the reasonableness of solutions to fraction word problems by checking against the original context.
Create and solve their own fraction word problem based on a real-life situation.

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Curriculum details

Strand: Number (Strand 1)
Sub-strand: Fractions, Decimals and Percentages (1.3)
Content standard: B9.1.3.1 - Apply the understanding of operations on fractions to solve problems involving fractions of given quantities and round the results to given decimal and significant places
Indicator: B9.1.3.1.3 - Review word problems involving basic operations on fractions.
Suggested placement: Term 1, Week 12 (Week 12 of the year)
Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.
Curriculum reference: Mathematics, Common Core Programme (JHS1-JHS3), 2023, p. 174
Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1. Solve word problems based on fractions.
i. A test is made up of 20 questions, how many questions must you answer correctly to get a score of 80%?
ii. By what percentage was a television set reduced if it was marked GH₵2,250 and sold for GH₵2,025?
iii. In an election involving two contestants, one candidate claimed 52% of the votes, while the other candidate claimed 2,681 votes. If 5000 people voted, how do you know the election results are invalid?
iv. Esi and Fusena prepared orange drink by mixing orange squash and water. Esi's drink was made of 3 orange squash and Fusena's was 8
made up of 2 orange squash. Whose drink tasted stronger of orange? 5