MULTIPLYING FRACTIONS copyrightamberpasillas 2010 If I have onehalf
MULTIPLYING FRACTIONS copyright©amberpasillas 2010
If I have one-half of a one-fourth piece, how much will I have compared to a whole square? copyright©amberpasillas 2010
Multiply ½ times ¼ = x ½ ¼ copyright©amberpasillas 2010
Multiply ½ times ¼ = x ½ ¼ copyright©amberpasillas 2010
Multiply ½ times ¼ = x ½ ¼ copyright©amberpasillas 2010 1/8
If I have three-fifths of a three-fourths piece, how much will I have compared to a whole square? copyright©amberpasillas 2010
Multiply 3/5 times 3/4 = x 3/5 3/4 copyright©amberpasillas 2010
Multiply 3/5 times 3/4 = x 3/5 3/4 copyright©amberpasillas 2010
Multiply 3/5 times 3/4 = x 3/5 3/4 copyright©amberpasillas 2010 = 9/20
If I have one-half of a two thirds piece, how much will I have compared to a whole square? copyright©amberpasillas 2010
Multiply ½ times 2/3 = x ½ 2/3 copyright©amberpasillas 2010
Multiply ½ times 2/3 = x ½ 2/3 copyright©amberpasillas 2010
Multiply ½ times 2/3 = x ½ 2/3 copyright©amberpasillas 2010 = 2/6 = 1/3
Multiplying Fractions Model 9 out of 20 boxes shaded copyright©amberpasillas 2010
Area Model for Multiplication 2 out of 12 boxes shaded copyright©amberpasillas 2010
You are going to get a new study guide titled MULTIPLY FRACTIONS MODEL You can use this on your test! Take a look at the st 1 copyright©amberpasillas 2010 example!
If I have one-third of a one-half piece, how much will I have compared to a whole square? Draw one-third (horizontal) 1 Draw one-half (vertical) 3 1 2 What is 1/3 of ½? Draw a picture. copyright©amberpasillas 2010
If I have one-third of a one-half piece, how much will I have compared to a whole square? Draw one-third (horizontal) 1 Draw one-half (vertical) 3 1 2 What is 1/3 of ½? Draw a picture. copyright©amberpasillas 2010
If I have one-third of a one-half piece, how muc will I have compared to a whole square? Draw one-third (horizontal) 1 Draw one-half (vertical) 3 1 2 What is 1/3 of ½? Draw a picture. NOW TRY EXAMPLE#2 We will do this together. Watch as I show you how to do it. copyright©amberpasillas 2010
Try example # 2 on the front right side. copyright©amberpasillas 2010
Follow the examples shown to solve each fraction problem. Draw a picture, label it, and circle your answer. copyright©amberpasillas 2010
1) Two-thirds times one-fourth? Try the rest of your study guide. I will ask for volunteers in about 5 minutes. copyright©amberpasillas 2010
Study Guide ANSWERS copyright©amberpasillas 2010
Multiplying Fractions copyright©amberpasillas 2010
Multiplying Fractions 2 1 – 4 3 2 – 2(9) 3(2) – 18 = 6 1 Write 4 as an improper fraction. 2 Multiply numerators. Multiply denominators. Simplify. = – 3 copyright©amberpasillas 2010
Cross Canceling Cross-Canceling - Reducing before you multiply. copyright©amberpasillas 2010
Cross Canceling copyright©amberpasillas 2010
Take Out Your Study Guide!!! copyright©amberpasillas 2010
#14 Draw one-third (horizontal) Draw negative one-half (vertical) 1 3 What is of -1 2 ? Draw a picture (overlay them). + • – = – copyright©amberpasillas 2010
Multiply #15 You do NOT need common denominators Multiply the numerators and denominators straight across. 7 2 4 = 28 3 6 4 Reduce! 46 6 28 4 24 46 ) 4 Change the improper fraction to a mixed number ÷ ÷ 2 2 copyright©amberpasillas 2010 2 = 4 3
Extras copyright©amberpasillas 2010
Multiplying Fractions copyright©amberpasillas 2010
Multiplying Fractions copyright©amberpasillas 2010
#Extra Draw one-third (horizontal) Draw one-half (vertical) 1 3 What is of 1 2 ? Draw a picture (overlay them). copyright©amberpasillas 2010
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