TTO1 CH2 4 decimal numbers

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• Middelbare school
• havo
• Leerjaar 1

TTO1 CH2 4 decimal numbers

Start assignment

Complete the table below:

A) 9400.03

B) Twentythreehundredths

Program:

• Instruction
  
• Bettermarks
• Check-out 

Place value table

Calculate with decimal numbers

• Decimal numbers can be shown on the number line, just like ⁣natural⁣ numbers and fractions.
• Depending on how the number line is divided up, you enter decimal numbers with one decimal place (tenths), with two decimal places (hundredths), three decimal places (thousandths), etc.

Example number line

Number line

0.8

one and two tenths

0.2

Adding decimal numbers

• You add a decimal number to another decimal number by sorting the numbers by place value and then adding them digit by digit.
  
• 4.25+12.32
• Sometimes it is necessary to carry the result over:
  
• 6.7+8.52

3.23 + 7.78 =

Subtracting decimal numbers

2.5 – 1.73 =

3.6 - 2.22

Words you should know...

• Decimal number
• Natural number
• Even number
• Odd number
• Million, billion, trillion, quadrillion

Place value table

Explain:
What is a natural number?

Explain:
What is an odd number?

Bettermarks

Make: 4.1, 4.2 and 4.3

Run activity

Groups of 4

Paper & pen

Write down the numbers 1-15

quizizz

https://quizizz.com/admin/quiz/653bda68212bc70b084d7d69?section=collections&searchLocale=

Evaluation

Check:

At the end of this lesson…

…you can compare numbers (using < and >)

…you can calculate with large numbers

…you can calculate with decimal numbers

Do before thursday: 4.1, 4.2 and 4.3