All flashcard decks Iraqi Third Intermediate Ministerial Exams syllabus →

30 cardsIraqi Third Intermediate Ministerial Exams

Third Intermediate: More Key Rules in Maths and Science

Thirty revision cards on arithmetic, geometry, forces, energy and basic biology and chemistry for the third intermediate exams.

Start studying Play Match

PDF study sheet

Free account needed to save, copy or download. We bring you back here.

1 / 30

0 known

TermClick or press Space to flip

Solving a linear equation

GetMyMockTestQuestion side

Full list

Terms in this deck (30)

Iraqi Third Intermediate Ministerial Exams mock tests →

Solving a linear equation

Do the same operation to both sides: move the constant first, then divide by the coefficient.

Percentage of an amount

p %

n

\frac{p}{100} \times n

Reverse percentage

If the price after a discount of

d %

S

, the original price is

S \div (1 - d /100)

Ratio sharing

Add the parts, divide the total by the number of parts, then multiply by each share.

Pythagoras' theorem

In a right-angled triangle

c^{2} = a^{2} + b^{2}

, where

c

is the hypotenuse.

Area of a rectangle and a triangle

Rectangle: length x width. Triangle: half x base x height.

Area of a trapezium

Half x (sum of the parallel sides) x height.

Circle formulas

Circumference

= 2 π r

; area

= π r^{2}

Volume of a cuboid and a cylinder

Cuboid:

l \times w \times h

. Cylinder:

π r^{2} h

Mean, median and mode

Mean: total / number. Median: middle value of the sorted list. Mode: most frequent value.

Factorising a difference of squares

a^{2} - b^{2} = (a + b) (a - b)

Solving a quadratic by factorising

Find two numbers with the right sum and product, then set each bracket to zero.

Standard form

Write numbers as

a \times 1 0^{n}

with

1 \leq a < 10

Average speed

Total distance divided by total time.

Speed, force and density

Speed = distance/time; Force = mass x acceleration; Density = mass/volume.

Work, power and pressure

Work = force x distance; Power = work/time; Pressure = force/area.

Ohm's law

V = I R

, with current in amperes, voltage in volts and resistance in ohms.

Kinetic and potential energy

K E = \frac{1}{2} m v^{2}

;

P E = m g h

Photosynthesis

Carbon dioxide + water, with light and chlorophyll, gives glucose + oxygen.

Respiration

Glucose + oxygen gives carbon dioxide + water + energy.

Osmosis

The movement of water across a partially permeable membrane from a dilute to a concentrated solution.

pH scale

Below 7 acidic, 7 neutral, above 7 alkaline.

States of matter changes

Melting, freezing, evaporation, condensation, and sublimation (solid to gas).

Atomic structure

Protons (+) and neutrons (0) are in the nucleus; electrons (-) orbit it. Atomic number = number of protons.

Physical and chemical changes

A chemical change makes new substances (burning, rusting); a physical change does not (melting).

Separating mixtures

Filtration for insoluble solids; evaporation to recover a dissolved solid; distillation for liquids.

Food chain terms

Producers make food; consumers eat other organisms; decomposers break down dead matter.

Renewable energy

Solar, wind and hydroelectric energy are renewable because they are replaced naturally.

Causes of the seasons

The tilt of the Earth's axis changes the amount of sunlight each hemisphere receives.

Day and night

They are caused by the rotation of the Earth on its axis every 24 hours.

Iraqi Third Intermediate Ministerial Exams in Iraq

In Iraq, Iraqi Third Intermediate Ministerial Exams is part of: Ministerial exams.

Students on the same pathway also practise:

More Iraqi Third Intermediate Ministerial Exams practice

Iraqi Third Intermediate Ministerial Exams mock tests

All Iraqi Third Intermediate Ministerial Exams practice →