# Divide with decimals Standard UW.GAP.5.M.NBT.07 Add, subtract, multiply, and divide decimals to hundredths using concrete models or drawing and strategies

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• Divide with decimalsStandard UW.GAP.5.M.NBT.07 Add, subtract, multiply, and divide decimals to hundredths using concrete models or drawing and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.

• Essential Questions1.What is addition? How do you add decimals? 2.What is subtraction? How do you subtract decimals? 3.What is multiplication? How do you use a model and partial products to represent multiplying decimals? 4.What is division? How do you use a model and partial products to represent dividing decimals?

• Set....Think about the strategies we use to divide whole numbers....Take turns with your face partner and describe how we multiply and divide whole numbers.

• Objective I can divide decimals to hundredths place.

• Decimal - a number with a fraction of tenths, hundredths, etc. written after a decimal point.Decimal point - the (.) between a whole number and fractions of tenths, hundredths, thousandths, etc.Digit- any of the numerals 0-9, which may be part of a larger number.

24.56 x 4 . 1 = 100.696Lets Review Again

• Rules for Dividing Decimals

To divide decimals, divide as you would with a normal whole number then you move over the decimal.

• Dividing DecimalsExample 2Solve = 2.25 2.5

2.5)2.25Estimate, Multiply, Subtract, Bring Down, Start again/StopDividendDivisor

• Dividing DecimalsExample 2Solve = 2.25 2.5 02.5)2.25 -0 225 Divide as with whole numbers.

• Dividing DecimalsDivide as with whole numbers.

Move decimal from 2.5 (divisor) over 1 to get rid of it

Move the decimal over that same amount of spaces in the dividend.

Then move decimal straight up.

Example 2Solve = 2.25 2.5 0.925)22.5 -0 225 -225 0Answer: 0.9

• Now lets try one together.46 1.2

• Now you do one15.2 4.1

• Lesson on Dividing Decimalshttp://learnzillion.com/lessons/561-divide-decimals-using-knowledge-of-multiplication

• You and a partner try...Using what you learned in the lesson, using pictures, models, and properties of operations solve this problem with your partner...26.4 .03

• ClosureThink about what is different about dividing whole numbers and dividing decimalsWrite a \$2 summary explaining what is differentRepeat todays objective

• Lets watch a fun video about dividing decimalshttp://www.youtube.com/watch/?v=iWU6K3GV2A8

• Independent Practice!!! (yay)

1) 1.269 .03 =

2) 25.505 05 =

3) .1824 .6 = 4) 243.6 1.2 =

5) 18.72 .9 =

6) 50.70 1.0 =

7) 168.56 .08 =

8) 48.164 .4 = ##### 01/06/10 Divide Decimals#5 Today’s Plan: -Multiplication Practice -Correct Homework -Divide Decimals Learning Target: -I will divide decimals. Warm Up:
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