​MGSE6.NS.3

​Fluently add, subtract, multiply, and divide multi-digit decimals using the standard algorithm for each operation.

​Learning Target

​I can multiply, and divide multi-digit decimals using the standard algorithm for each operation.

First you line up the decimals then add.​

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​Some text here about the topic of discussion.

Adding Decimals​

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You line up the decimals and subtract.​

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​Some text here about the topic of discussion.

Subtracting Decimals​

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Add (+) or Subtract (-) with Decimal

• Find the decimal

• Line up the decimals

• Fill in the empty spots with zero

• Add or Subtract

• Bring down the decimal in your answer

Multiplying ( × ) with Decimals

• The number with the most digits goes on top

• Decimals do not line up

• Multiply like normal

• Count how many places in the first number (top) the decimal is moved over

• Count how many places in the 2nd number (bottom) the decimal is moved over

• The total number of places moved in the 1st and 2nd number is how many places you move the decimal in your answer

Dividing (÷) with Decimals

• Divisor cannot have a decimal

• Move the divisor decimal so it is a whole number

• Move the same amount of places in the dividend

• Place a decimal straight up where you write your answer 

• Divide like normal

• **When the divisor has no decimal but the dividend does, just move the decimal up and divide normally.

Story Problems with Decimals

• Read the problem carefully!

• Look for clue words!

• Follow the Rules for Decimal Operations!

• Check to make sure your answer makes sense!