Reading Unit (10)

 

 

-Arithmetic is a branch of math concerned with the basic operations of addition, subtraction, multiplication, and division of numbers.

-Trigonometry is the study of mathematical relations between sides and angles.

 

-One hectare equals (is equal to) 10,000 square meters.

-The area of a rectangle = the length x the width.

-The volume of a cylinder = pi x radius squared x height.

 

-The circumference of a circle =3.14 x diameter.

-The area of a circle= 3.14 x radius squared.

-10% of 1000 equals one hundred. (10% ten per cent)

-The area of a rectangle = the length x the width.

-The sign ≠ means is not equal to.

-The sign ≈ means equals approximately.

-The sign // means parallel to.

-One third is greater than one fifth.

-The ball is spherical in shape.

-A ruler is marked with centimeters.

-A ruler is used for measuring things.

- A ruler is used for drawing straight lines.

-We can draw a right angle by using a set-square.

 

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sums

plus – minus – multiplied by – divided by

-5 plus 5 equals 10.

-4 multiplied by 5 is equal to 20.

-A third plus a half equals five sixths.

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A protractor is an instrument for measuring angles.

 

 

-balance/weighing objects

-thermometer/measuring temperature

-microscope/magnifying objects

-compass/drawing circles

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Derivations

triangle – triangular

rectangle – rectangular

circle - circular

semicircle – semicircular

cylinder – cylindrical

cone – conical

sphere – spherical

square – square

 

A coin has the shape of a c….  .

A ball/A stamp/a pen/a blackboard/a wall chart

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-We can calculate the area of a rectangle by multiplying the length by the width.

 

 

a parallelogram

an equilateral triangle

an isosceles triangle

an angle

a right-angled triangle

rectangle

square

pyramid

a cylinder

circle

cone

a line

perpendicular (to)

base

sine – cosine – tangent – cotangent

hypotenuse – adjacent side – opposite side                        

figure

point of intersection

intersect sth at

parallel to

 

lines:

 

horizontal – diagonal – curved – vertical

 

angles :

 

acute (less than 90)

obtuse (more than 90, but less than 180)

adjacent (next to each other and add up to 180)

reflex (more than 180 but less than 360) 

exterior               

interior

 

smaller than – greater than

A half

a third             

a quarter         

a fifth      

two and three quarters             

four hundred

3.05: three point naught five

 

- symbol

m=meter mm=millimeter   km=kilometer g=gram l=liter

5mē (five square meters)   5mģ (five cubic meters)

 

 

 Derivation

             

( 7 )

harm / - ful

inform / - ation

breath / - e

affect / effect

addict / - ive

mix /  - ture

chemistry/ chemical

fly / flight

( 8 )

Electricity / electric

is attracted / attraction

Atoms /atomic

a charge / to charge

Alternating / alternator

(10)

triangle – triangular

rectangle – rectangular

circle - circular

semicircle – semicircular

cylinder – cylindrical

cone – conical

sphere – spherical

square – square

( 1 )

punctual /  - ity

competence /competent

devote/ devotion

busy /a business

motivate / motivating

poems /a poet

feel nervous /  - ly

thinking/ thought

understand/ - ing 

 ( 2 )

environment / - al

pollutant / pollution

smells / smelly

The North Pole / polar

climate / climatic

radiate(s) / radiation

science/ scientist

insect / insecticide

Globalization / Global

sun / solar

 

 

A coin has the shape of a circle. It's -------------.   Circular

 

 

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