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Dividing Fractions. Dividing Fractions. Recall the method for multiplying fractions. Remember that multiplying and dividing are opposite operations. Ex) Divide. Dividing Fractions. Recall the method for multiplying fractions. Remember that multiplying and dividing are opposite operations. - PowerPoint PPT Presentation
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Dividing Fractions
Dividing FractionsRecall the method for multiplying fractions.
Remember that multiplying and dividing are opposite operations.
Ex) Divide.
Dividing FractionsRecall the method for multiplying fractions.
Remember that multiplying and dividing are opposite operations.
Ex) Divide.
Dividing FractionsRecall the method for multiplying fractions.
Remember that multiplying and dividing are opposite operations.
Ex) Divide.
Dividing FractionsEx) Can we use that method here?
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
We can invert and multiply.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
We can invert and multiply.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
We can invert and multiply.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
We can invert and multiply.
Dividing FractionsEx) Can we use that method here?
No, we don’t want decimals.
We need a different method.
We can invert and multiply.
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Fractions may look different, but remember they are still numbers. We should still think of division in the same way.
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Fractions may look different, but remember they are still numbers. We should still think of division in the same way. Here, we are trying to figure out how many times one number will fit into another number.
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
81
3
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
81
3
81
13
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
81
3
18
13
81
13
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Invert and Multiply !!!
81
3
18
13
81
13
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
81
3
124
18
13
81
13
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
81
3
24124
18
13
81
13
Dividing FractionsEx) Rhiannon is planning to make friendship bracelets for her friends. Each bracelet is made with a piece of string that is 1/8 m in length. How many bracelets can she cut from a piece of string that is 3 m long?
Rhiannon can make 24 bracelets from a 3 m rope.
81
3
24124
18
13
81
13
Dividing Fractions.
18
81
: sreciprocalcalledareandNOTE
Dividing Fractions
.1:
.18
81
:
togethermultipliedaretheywhenofproductahavetheyifothereachofsreciprocalarenumbersTwoDEFINTION
sreciprocalcalledareandNOTE
Dividing Fractions
111
88
18
81
.1:
.18
81
:
togethermultipliedaretheywhenofproductahavetheyifothereachofsreciprocalarenumbersTwoDEFINTION
sreciprocalcalledareandNOTE
Dividing FractionsEx) Divide.
65
2215
Dividing FractionsEx) Divide.
65
2215
56
2215
Dividing FractionsEx) Divide.
Invert and Multiply !
65
2215
56
2215
Dividing FractionsEx) Divide.
15 and 5 have a common factor.
65
2215
56
2215
Dividing FractionsEx) Divide.
Divide them both by 5.
65
2215
56
2215
Dividing FractionsEx) Divide.
65
2215
16
223
56
2215
Dividing FractionsEx) Divide.
22 and 6 have a common factor.
65
2215
16
223
56
2215
Dividing FractionsEx) Divide.
Divide them both by 2.
65
2215
16
223
56
2215
Dividing FractionsEx) Divide.
Divide them both by 2.
65
2215
13
113
16
223
56
2215
Dividing FractionsEx) Divide.
65
2215
13
113
16
223
56
2215
Dividing FractionsEx) Divide.
65
2215
119
13
113
16
223
56
2215
Operations with Mixed Numbers Ex 6) Divide.
5411
54
41
516
14
516
4513
Operations with Mixed Numbers Ex 6) Divide.
5411
54
41
516
14
516
4513
Operations with Mixed Numbers Ex 6) Divide.
Invert and Multiply
5411
54
41
516
14
516
4513
Operations with Mixed Numbers Ex 6) Divide.
Invert and Multiply
5411
54
41
516
14
516
4513
Reduce on the diagonal .Divide by the common factor.
Operations with Mixed Numbers Ex 6) Divide.
Invert and Multiply
5411
54
41
516
14
516
4513
Reduce on the diagonal .Divide by the common factor.
Operations with Mixed Numbers
Got it?
