# 23/24 EHE L19 Yr 11 - Probability

thomas.payne

Created on November 8, 2023

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## Transcript

While you wait, a problem:You and a friend are trapped on a desert island. There is one banana left to eat, you have a couple of dice. You come up with a game, you will roll both dice, if the biggest number is 1, 2, 3 or 4 you will win. If the biggest number is 5 or 6, your friend will win. Who has the best chance of winning the banana? How can you prove it?

Lesson 19 - PRobability

Lesson 19 - PRobability

1. 0.3 × 0.072. 32 - √363. Share £50 in the ratio 7 : 34. To increase something by 40%, multiply by? [ 0.4 , 1.04 , 1.4 , 4 ]5. Convert 24/40 to a percentage.6. Find the nth term of the sequence 3, 8, 13, 18, 23, ...7. Write down a cube number.8. What is the formula for the area of a circle?

Challenge

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Quizizz

Probability

Practice

Probability

Probability

##### What's the chance of flipping 2 Heads in a row with a normal coin?

Tree diagrams

#### Replacing

##### There are 4 red balls in a bag and 5 green balls. I pick a ball out, note down the colour and put it back. I then pick again and note down the colour. Draw a tree diagram to represent this including probabilities.

Tree diagrams

#### Not-Replacing

##### There are 4 red balls in a bag and 5 green balls. I pick a ball out and note down the colour. I then pick again and note down the colour. Draw a tree diagram to represent this including probabilities.

Tree diagrams

##### It's dark in the morning and I want to find a pair of socks without turning on the light and waking my partner. I have 12 black socks and 8 blue socks. What is the chance I get a pair?

Tree diagrams

##### I flip a coin, then spin a spinner. Draw a tree diagram to represent these events. Workout the probability of flipping a head and then landing the spinner on blue.

Tree diagrams

##### Key things- Each fork must add to 1.- You multiply along pathways.

Tree diagrams

##### Then search for the nugget.

##### Click on this one

02

01

Tree Diagrams 2: Calculating Probability of Single Outcome [MF46.15]

Tree Diagrams 1: Completing Diagrams [MF46.14]

Century Tasks

##### Head to 'my courses'

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

Tree diagrams

Ordinary to Standard Form [MF14.04]

Standard Form to Ordinary [MF14.03]

Dividing with Standard Form [MF14.09]

Multiplying with Standard Form [MF14.08]

02

01

03

04

Week 2 Tasks

##### Then search for the nugget.

##### Click on this one

Lesson 2 - Standard Form

##### Head to 'my courses'

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing

https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing