Percentages

Showing 1–16 of 17 results

Percentages

Calculating a Percentage Change

Students learn about calculating a percentage change using a decimal multiplier.  Learning progresses from findi...

Calculating a Repeated Percentage Change

Students learn how to calculate a repeated percentage change using decimal multipliers.  As learning progresses ...

Calculating a Simple Interest in Financial Mathematics

Students learn about calculating a simple interest in financial mathematics. Learning progresses from calculatin...

Converting between fractions, decimals and percentages

>Using the place value table and equivalent fractions students learn about converting between fractions, deci...

Expressing One Number as a Percentage of Another

Students learn about expressing one number as a percentage of another number using both calculator and non-calcu...

Finding Percentages without a Calculator

Students learn how to calculate a percentage of an amount  using either 10% or working with equivalent fractions...

Finding the Original Amount – Percentage Changes

Students learn how to calculate the original amount after a simple percentage change.  Learning progresses from ...

Writing Fractions as Percentages

Students learn how to convert between fractions and percentages using the place value table, factors of 100 equi...

Reverse Percentages

Using equivalent ratios students learn how to work a percentage change in reverse to calculate the original 100%...

Percentage Increases

Students learn how to increase an amount by a given percentage using multipliers.   Throughout the lesson proble...

Percentage Decreases

Using efficient calculator methods students are taught how to calculate a percentage decrease.  Throughout the l...

Writing Percentages

Students learn how to write one number as a percentage of another using written and calculator methods.

Converting between fractions decimals and percentages

Converting between fractions, decimals and percentages using equivalent fractions

Compound Percentage Increases

Students learn how to calculate a compound percentage increase using a multiplier.

Mr Mathematics Blog

Calculating the Volume of a Pyramid

When calculating the volume of a pyramid we can substitute the values of the length, width and perpendicular height into the formula V = 1/3 lwh.  In my experience this is often provided for the students with little explanation as to why a volume of a pyramid is exactly one third the volume of a […]

Solving 3D Problems using Trigonometry

When teaching solving 3D problems using trigonometry we begin the lesson with a recap of Pythagoras’ Theorem and the three trigonometric ratios.  We do this by matching the ratio and equations to the respective right-angled triangle.   Students are encouraged to work in pairs and to show the diagrams as part of the working out on […]

Rounding to a significant figure

When I teach rounding to a significant figure, I ask the class to discuss in pairs or small groups a definition for the word significant.  It is a word that all the students have heard before but not all are able to define. After 2 or 3 minutes of conversation I ask the students to […]