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I'm an IGCSE Maths Teacher - Post your questions here.

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Useful stuff combined FOR MATHS AND MORE
MY THREAD OFFERS THE FOLLOWING NOTES:
All Available here>>>CLICK ME<<<
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Topic-wise Past papers

Acids bases and salts
Air and Water
Chemical changes
Chemical reactions
Electricity and chemistry
Organic chemistry
Redox
Reversible reactions

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Chemistry Classified Paper 1
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There are some formulas to learn for scales and maps here are those:

for distance: ACTUAL DISTANCE/ MAP DISTANCE = (MAP SCALE)

for area: ACTUAL AREA / MAP AREA= (MAP SCALE) ^2

for volume: ACTUAL VOLUME/ MODEL VOLUME= (SCALE)^3
 
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Dear sir,
I have a doubt..in division of upper and lower bounds of two numbers; how to find the least possible and greatest possible values?
I am doing my exams tomorrow and need to know the answer as soon as possible
 
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AS SALAM O ALAIKUM !!
WISH YOU GUYS ALL THE BEST FOR YOUR EXAMS !!
I HAVE MATHSP22 AND BIOLOGY P62 EXAM TOMORROW!!
I'M NERVOUS!!
 
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I AM WRITING CORE TOMMORROW AND I DONT KNOW HOW TO SOLVE THE QUESTIONS RELATED TO THE GRAPH HELP NEEDED
 
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