Decimal Operations Objective: To solve decimal problems correctly by using the correct place values.

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Presentation transcript:

Decimal Operations Objective: To solve decimal problems correctly by using the correct place values.

A helpful way to remember addition and subtraction with decimals…

Placeholders Place Value

Line up decimal places What do we put here? Evaluate:

Line up decimal places What do we put here? Evaluate:

* Line up decimal places What do we put here? Evaluate:

Line up decimal places What do we put here? Evaluate:45.8 –

Line up decimal places What do we put here? Evaluate:72.9 –

Line up decimal places What do we put here? Evaluate:98.6 –

How do we write the following dollar amounts with a decimal? $5$12 $24$99 $5.00 $12.00 $24.00 $99.00 If you have a whole number where is the decimal located?

Line up decimal places where’s the decimal? Evaluate:61 +.4

Line up decimal places where’s the decimal? Evaluate:

Line up decimal places where’s the decimal? Evaluate:

Line up decimal places where’s the decimal? Evaluate: