1.Find the Square Root of 0.0025

Square Root of 0.0025

=Square Root of 25/10000

=Square Root of (5*5)/(2*2*2*2*5*5*5*5)

=5/(2*2*5*5)

=5/100

=0.05

2.Find the Cube Root of 0.729

Cube Root of 0.729

=Cube Root of 729/1000

=Cube Root of 9*9*9/10*10*10

=9/10

=0.9

3.Find the Cube Root of 8/0.125

Cube Root of 8/0.125

=Cube Root of 8000/125

=Cube Root of (2*2*5)x(2*2*5)x(2*2*5)/(5*5*5)

=20/5

=4

By: Milo!

Feel free to post questions here and i will try my best to help you :D

ReplyDeleteFeedback on Question 1:

ReplyDeleteThe steps are clear.

You could explain further on the thinking behind the following steps:

"=Square Root of 25/10000

=Square Root of (5*5)/(2*2*2*2*5*5*5*5)

=5/(2*2*5*5)"

That is, using the mathematics vocabulary like factorise and grouping.

Feedback on Question 2:

ReplyDeleteThe working is clear except that "10" was missing in the 3rd line of the working.

Similarly, the thinking behind the working was not articulated.

Feedback on Question 3:

ReplyDeleteWorking is clear, except that the thinking behind the steps were not articulated.

SCORE = 7

ReplyDeleteQuestion 1: 2

Question 2: 2

Question 3: 2

Timeliness: 1