Multiply Fractions
4/5 x 15 = ___________
4/5 x 15 = 12
5 ÷ 1/2 =
5 ÷ 1/2 = 2 1/2
Jacob is baking chocolate chip cookies. The recipe
uses 3/4 cup of sugar. Jacob wants to make one-half
of a batch. How many cups of sugar does he need?
Multiplication because the total is unknown. Also the key word is 1/2 of 3/4.
1/2 X 3/4 = 3/8 of a cup
List all the key words for multiplication and division.
Key words DIVISION:
Split Evenly
Split Equally
Each
# equal sections
How many times greater?
How many times less?
Key words Multiplication:
- # OF #
-product
- # Times
Think:
Repeated addition??
3/6 + 2/7 =
3/6 + 2/7 = 21/ 42 + 12/ 42 = 33/42 = 11/42
1/12 x 4/8 =
1/12 x 4/8 = 4/96 = 1/24
1/6 ÷ 10 =
1/6 ÷ 10 = 1/60
Mateo has 7 liters of punch for a party. Each glass holds 1/5 liter of punch. How many glasses can Mateo fill with punch?
This is division. The total is KNOWN. I am dividing group of 1/5 liter into cups and want to know how many groups I can create of 1/5.
1/5 / 7 = 35 glasses.
MULTIPLCATION. The total is unknown. Repeated addition.
25 1/5 cups play dough.
10 x 10 x 10 x 10 abbreviated?
Find the value of 10 to the power of 6?
10^4 or 10000
1000000
1 1/3 x 1 4/9 =
1 1/3 x 1 4/9 = 52/57 = 1 25/27
⅜ ÷ ⅘ =
⅜ ÷ ⅘ = 15/32
A punch bowl had 2 1/2 liters of juice in it. Liam drank 1/3 of the juice in the bowl. How many liters of juice did Liam drink?
This is multiplication. The key word is 1/3 of 2 1/2.
5/6 liters of juice.
In the fridge, Hannah had 2/3 of a quart of milk.
She used half of this milk when she had breakfast
cereal. How much milk did she use?
1/2 X 2/3 = 2/6 = 1/3 of a quart.
$39.91 - $14.85 =
7.54 + 5.77 =
$39.91 - $14.85 = $25.06
7.54 + 5.77 = 13.31
⅞ X 4/9 =
⅞ X 4/9 = 28/72 = 7/18
⅗ ÷ ⅞ =
⅗ ÷ ⅞ = 24/35
A stretch of highway that is 12 1/4 kilometers long has a speed limit evenly spread out each 7/8 of a kilimometer. How many speed limit signs are on that highway?
This is division. We are looking for the TOTAL number of signs. evenly and each are key words.
14 speed limit signs
Vera is using her phone. Its battery life is down to 2/5, and it drains another 1/9 every hour. How many hours will the battery last?
This is division because the total is known. Its also asking you how many groups of 1/9 can be pulled from 2/5.
3 and 3/5 hour
Average annual rainfall totals for cities in Connecticut are listed below.
Norwalk 0.97 meters
Stamford 0.947 meters
Westport 1.5 meters
Greenwich 1.268 meters
1.) Round each to the nearest tenths place
2.) Put in order from least to greatest!
Norwalk 1.0
Stamford 0.9
Westport 1.5
Greenwich 1.3
2.) 0.9, 1.0 , 1.3 , 1.5
1/4 X 4/7 =
1/4 X 4/7 = 4/28 = 1/7
4/5 / 4/10 =
4/5 / 4/10 =40/20 = 2
Write a MULTIPLICATION FRACTION word problem. It can be...
Fraction X Fraction
Fraction X Whole Number
OR Fraction X Mixed Number.
Lexi will judge you MUAHAHAHAH
Write a DIVISION FRACTION word problem. It can be...
Fraction X Fraction
Fraction X Whole Number
OR Fraction X Mixed Number.
HMAAUKUHGLKHELURHRB<JEH:I :) :P :P >:(
75.9 ÷ 3.3 =
7.21 x 6.6 =
75.9 ÷ 3.3 = 23
7.21 x 6.6 = 47.586