Percentages – Increase and Decrease
How do you determine an item’s price if there is a percentage increase or decrease? In other words, what should you pay if there is a discount or if there is an increase in the price? To determine the new…
ClassroomEducation
Maths Education | Wiskundeonderrig
ClassroomEducation
Maths Education | Wiskundeonderrig
Category Grade 7 maths
Exponents – Calculations exercises – for Grade 7 (12 years and older)
This video consists of calculations to practice the laws of exponents on a basic level. The order of operations plays an important part and Grade 7 learners, ages 12 and up, will benefit to practice the different calculations.
What are Percentages
To understand what percentages are, think of it in terms of “per cent”. The “per” means “out of” and the “cent” refers to one hundred. So, “percentage” means out of a hundred. Percentages can be written as common fractions. For…
Order of Operations and Properties of Whole Numbers
Is 2 + 3 x 4 equal to 20 or is it equal to 14? Why are there different answers? To prevent different answers to a calculation, we need to follow a specific order. Thus, we need to apply the…
Operations with Whole Numbers
When doing operations with whole numbers, it is important to know that zero is the identity element of addition and 1 is the identity element of multiplication. What does that mean? When adding a zero to any number, the number’s…
Rounding Off and Estimation
When rounding off, we write a number simpler as it is, but we keep it close to the original value. To do so, we need to understand place value. In the number 2 398 643,0699 (two million, three hundred and…
