Learning Objectives
Beginning
To be able to explain a method for rounding decimal numbers to a specific number of places.
How do we round 1.27 to one decimal place?
Developing
To be able to demonstrate how to round numbers to a given number of significant figures.
How do we round 1.27 to 2 significant figures?
Mastering
To be able to demonstrate how to estimate the values of calculations involving positive numbers greater than one.
What is your estimate of (12.5 x 1.23)/12.3 and how did you work this out?
Resources
Beginning
Ten Ticks - 6, 3, page 19 (bottom of page).
Mastering
We will start by looking at rounding numbers the nearest 1, 10, 100 or 1000. If you need some help take a look at this video: Rounding
Ten Ticks - 4, 3, page 7
We now move on to looking at rounding numbers to a set number of decimal places. If you need some help take a look at this video: Decimals Points and Significant Figures (first half).
Ten Ticks - 6, 3, page 19 (top of page)
Ten Ticks - 4, 3, page 7
We now move on to looking at rounding numbers to a set number of decimal places. If you need some help take a look at this video: Decimals Points and Significant Figures (first half).
Developing
We now move on to looking at rounding numbers to a set number of significant figures. If you need some help take a look at this video: Decimals Points and Significant Figures (second half).
Ten Ticks - 6, 3, page 19 (bottom of page).
Mastering
Finally we look at estimating calculations. If you need some help take a look at this video: Estimation, , Rounding and Estimation
