Saint Michael’s Academy of Oas, Inc.
ROXAS STREET, IRAYA NORTE, 4504 OAS, ALBAY
Passion for Truth & Compassion for Humanity
OP-SIENA SCHOOL SYSTEM
MATH 7
MODULE 9
Name:________________________________________________________
Grade/Section:_________________________________________________
Date:________________________________________________________
How was your experience in module 9? If you have concerns or
suggestions please write it down here:
_________________________________________________
_____________________________________________________
_____________________________________________________
_____________________________________________________
TOPIC: MEASUREMENTS
LEARNING TARGET
In this lesson you will learn how to:

Identify the basic units in the metric system

Convert measurements from one unit to another metric unit

Identify and use prefixes in the metric system.
Recall
Let’s first have a recall of your previous learnings.
QUESTION: What is a square root?
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
___________________________________________________________
TERMS TO REMEMBER

WATCH THESE VIDEOS TO HAVE A DEEPER UNDERSTANDING OF THE
LESSON:

https://youtu.be/3HWGug3zFJM

https://youtu.be/cZwMDYDpXX4
LET’S BEGIN
MEASUREMENT
This is the process of comparing an unknown quantity to a standard known
quantity.
It involves the following attributes:



Length, volume, weight.
Selecting a unit of measurement.
Compare the attribute of the object to the unit of measure.
The units of measurement used in ancient times were chosen for convenience
rather than accuracy. They commonly used parts of their human body.
ANCIENT EGYPTIAN UNITS
A span is the distance from the tip of the little finger
to the tip of the thumb of an outstretched hand.
A cubit is the distance from the top of the middle
finger of the outstretched hand to the front of the
elbow.
A foot is the length of a foot
A cubit is the distance from the top of the middle finger of
the outstretched hand to the front of the elbow.
A digit is the thickness or width of the index finger
A palm is the distance across the base of the four fingers
that form the palm.
The Metric System


Uses Greek and Latin prefixes to make conversion from one unit to
another easier.
A prefix is a power of ten exponent or multiplier that precedes unit.
Origin
Greek
Basic Unit
Latin
Prefixes
Symbol
Equivalence
Kilo
K
103
Hecto
H
102
Deka
da/dk
101
Meter
m
Deci
d
10−1
Centi
c
10−2
Milli
mm
10−3
IT’S YOUR TURN
Directions: Find the approximate square root of the following.
1.
2.
3.
4.
5.
√7 = __________
√3 =
√15 =
√28 =
√31
References:

REX-Math Kto12 edition by Orlando A. Orance and Marilyn O Mendoza
Watch this video to learn more:
https://www.youtube.com/watch?v=EOGwsvLotlM&t=77s
For questions and clarifications
Message me on Facebook:
https://m.me/reden.d.oriola
Attribution of Pictures: vecteezy.com
Prepared by: Reden D. Oriola