Math ll Learning Task

In maths, we've been learning about lots of things.

Big Numbers
We are trying to find out some large numbers in the world.
How many people are in the world? 
Currently, there are 7,703, 977,985 and it's adding more >7.7 x 10<9
How many galaxies are there?
We found out that there are approximately 100 billion galaxies are in the universe, but it's more likely to increase about to 20 billion (200 billion = 2 x 10>9) (100 billion = 10<9)
How many liters of water in the sea?
So far it's about 1.26 x 10<21= 1,260,000,000,000,000,000,000 litres of water in the sea.

Metrix Prefix
What is Metrix Prefix? A metric prefix is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.
Deca- 10 = 10<1
Hecto- 10x10 = 10<3
Kilo- 10x10x10 = 10<6
Mega- 10x10x10x10 = 10<9
Giga- 10x10x10x10x10 = 10<12
Tera- 10x10x10x10x10x10 = 10<15
Peta- 10x10x10x10x10x10x10 = 10<18
Exa- 10x10x10x10x10x10x10x10 = 10<21
Zetta- 10x10x10x10x10x10x10x10x10 = 10<24
Yotta- 10x10x10x10x10x10x10x10x10x10 = 10<27

Rounding Decimals

D.P - Decimal Places

S.F - Significant Figures

When you round up decimals, you can only do it if the second decimal is more than 5.

Converting Numbers

Instead of using heaps of zero in a number, you could use an exponent to make it easier.

Laws of Indices

1) When we multiply two numbers with the same base the indices are added.

2) When we divide two numbers with the same base the indices are subtracted.

3) When we multiply a power in a bracket, by another power outside the bracket.

In groups, we have to choose a planet to calculate how many days/years to get there from earth to (your chosen planets). To get there, we have to use an Airbus A380. My group chose Mercury and this is our calculation:

 Some facts

This is the whole presentation from my class

Percentages between each planet.

Commentary:
To calculate the percentages in between each planet. We first have to add all the distances together to get the whole. Then, we divide each distance by the total(whole). Next, we multiply the decimal by 100 and we round it up and turn it to percentage.

Example: Mercury - Venus
50.2 x 10<6 divided by 4,424,400,000 = 0.01134617123
0.01134617123 x 100 = 1.1
Percentages - 1%

Where we found the information-  https://theplanets.org/distances-between-planets/ & https://www.enchantedlearning.com/subjects/astronomy/planets