Year 1 Credit Mathematics

Thursday, April 20, 2023

Lesson Objective

Chapter 1

Calculations and the Calculator

Standard Form Scientific Notation - Calculator

To be able to use the calculator to To be able to use the calculator to calculate values using scientific calculate values using scientific notation.notation.

Standard Form Recap

–

P la n e ta ry D a ta

S u n

Ma s s 2 000 000 000 000 000 000 000 000 000 000 kg

Planetary DataJupiter

mass 2 000 000 000 000 000 000 000 000 000 kg

Pl a n et a r y DataE art h

mass 6 000 000 000 000 000 000 000 000 kg

Moon

mass 70 000 000 000 000 000 000 000 kg

Planetary Data

2 000 000 000 000 000 000 000 000 000 000

2 000 000 000 000 000 000 000 000 000

6 000 000 000 000 000 000 000 000

70 000 000 000 000 000 000 000

Can you write these numbers in standard form?

2 000 000 000 000 000 000 000 000 000

How did you do?

2 000 000 000 000 000 000 000 000 000 × 10 27

6 000 000 000 000 000 000 000 000× 10 24

70 000 000 000 000 000 000 000× 10 22

× 10 30

Planetary DataSun

diameter 1 390 000 km

Planetary DataJupiter

diameter 143 000 km

Planetary DataEarth

diameter 13 000 km

Moon

mass 3476 km

Planetary Data

1 390 000

143 000

13 000

3476

Can you write these numbers in standard form?

You are here

World Population: 6 450 000 000 = 6.45 billion = 6.45 × 10 9

Year 1 Credit Mathematics

Thursday, April 20, 2023

C Write in Scientific Notation

Starter

(a) 3 x 9

Calculations and the Calculator

(a) 2300

A Calculate the following B Find the length of x

(b) 0.00534

5 10

(b) 5 ÷ 5

Chapter 1

Standard Form Scientific Notation - Calculator

6 310cm

20cm

x cm102 = x2 + 82

100 = x2 + 64

100 - 64 = x2

pythagoras

36 = x2

6 = x2

(c) 569200

(d) 0.05060

2750

1

5 x 3 6 5

2

2. 3 x 103 5.34 x 10-3 5. 692 x 105 5.06 x 10-2

Year 1 Credit Mathematics

Thursday, April 20, 2023

Chapter 1

Calculations and the Calculator

Standard Form Scientific Notation - Calculator

We can use scientific notation on the calculator. Depending on your calculator you will use one of the following buttons.

xy 10x EXP EE

(you may have to use the shift button)

Enter the 5.4x103 into your calculator

Calculator Key Presses

5 4 0 xy 3

Year 1 Credit Mathematics

Thursday, April 20, 2023

Chapter 1

Calculations and the Calculator

Standard Form Scientific Notation - Calculator

xy 10x EXP EE(you may have to use the shift button)

Example: 6.25x10-7

Calculator Keys

6 2 xy0 -

Example: 8.31x1011

Calculator Keys

75

8 3 xy0 1 11

Not the subtraction

button

Year 1 Credit Mathematics

Thursday, April 20, 2023

Chapter 1

Calculations and the Calculator

Standard Form Scientific Notation - Calculator

Calculate: 4 x 106 ÷ 8 x 106

It is good practice to put each value in brackets

( 4 0 xy 6 )

( 8 0 xy 6 )

Year 1 Credit Mathematics

Thursday, April 20, 2023

NO CALCULATOR

Now try

p3 Ex 1.1 Q 1 to 7

Show your working

Complete for Next Lesson

Extension

Investigation Questions

Page 2 Q1 and Q2

Complete for Next Lesson

HomeworkComplete Homework Sheet 1 on or before MondayComplete Homework Sheet 1 on or before Monday

Chapter 1

Calculations and the Calculator

Revision Non calculator methods