Multiplication Properties
Four bags with 7 apples in each bag is the same amount as 7 bags with 4 apples in each bag. Which property of multiplication does this represent?
Commutative Property
783 x 10 x 10=
78,300
Use the distributive property to solve the equation
46 x 12=
46 x 12
(10 x 2)
(46 x 10) + (46 x 2)
460 + 92 =
552
873 x 6
5,238
44 x 23
1,012
44 x 0 = 0
Zero Property
500 x 80
40,000
Rewrite the expression using the Distributive property then find each product
101 x 23
101 (100 x 1)
(100 x 23) + (23 x 1)
(2,300) + (23)
2,323
The average rainfall at Mt. Waialeale in Hawaii is 460 inches per year. How much rain would this location expect to receive in 5 years?
460 x 5 = 2,300 inches
Mr. Krol spends $24 on parking each week. He works 48 weeks a year. How much does he spend on parking in a year?
$24 x 48 = $1,152
What number makes the number sentence true? And what property of multiplication is shown?
(4 x 8) x 7 = 4 x (8 x __)
7
Associative Property
Dr. Charlie works about 11 hours each day. What is the best estimate of the number of hours he works in 48 days?
11 estimate to 10
48 estimate to 50
50 x 10 = 50 hours
280 x 45
280 (200 x 80) x 45
(200 x 45) + (80 x 45)
9,000 + 3,600 = 12,600
A farmer wants to build a square pig pen. The length of one side of the pen is 13 ft. How many feet of fencing should the farmer buy?
square = 4 sides
13 x 4 = 52 feet
157 x 24
3,768
What is the identity property and give an example of it?
When you multiply any number by 1, the product is that number
check examples
Write fifteen cubed in exponential notation (form), expanded form, and standard form
15 3
15 x 15 x 15
3,375
789 x 6
4,734
A banana contains 105 calories. Last week, Noemi and Ariel ate a total of 14 bananas. How many calories does this represent?
105 x 14 = 1,470 calories