Vocabulary
What is the answer to a multiplication problem?
Product
The property that states that multiplying a sum by a number is the same as multiplying each addend by the number and then adding the products.
In other words..."Break it Apart!!!"
4 x 70 =
280
Find the missing numbers. What is the pattern?
_______________________________________
Hours 1 2 3 4 5
Miles 2 4 6 ? ?
8, 10
multiply by 2
n x 2 = 14
n = 7
What is a set of objects arranged in rows and columns?
Array
What is the Commutative Property of Multiplication?
The property that states that you can multiply two factors in any order and get the same product.
In other words... "Flippity Floppity Commutative Property!"
Is this multiplication sentence true or false:
(3 x 2) + (8 x 3) = 8 x 5
False
Kyle saves $10 every week for 6 weeks. How much money will Kyle have in Week 6?
Weeks 1 2 3 4 5 6
Amount $10 $20 $30 ? ? ?
He will have $60 in week 6.
5 x m = 35
m = 7
What is a pattern?
An ordered set of numbers in which the order helps you predict what comes next.
What is a factor?
A number that is multiplied by another number to find a product.
Which equations show the distributive property?
a. 3 x 20 = (3 x 10) + (3 x 10)
b. (7 + 3) + 8 = 7 + (3+8)
c. (5 x 10) + (5 x 10) = 5 x 20
d. (9 x 2) + (9 x 4) = 9 x 6
a, c, and d show the distributive property.
Find a rule for this table and fill in the missing number.
Tanks 3 4 5 6 7
Fish 120 160 200 240 ?
Multiply by 40. The missing number is 280.
8 x h = 60 - 4
h = 7
What is an equation?
*answer should involve the "equal sign"
a number sentence that uses the equal sign to show that two amounts are equal
What is a number that is the product of two counting numbers?
*Hint: they are infinite!
Multiple
Mr. Chow makes and sells dogs treats to local pet stores. The stores bag the dog treats to sell. Which pet store bought the greatest number of dog treats from Mr. Chow? How many dog treats did the store buy?
Pet Store # of treats per bag # of bags
Petsmart 6 90
Petco 8 60
Bark's Co. 7 80
Ruff's R Us 9 70
Ruff's R Us, 630 treats
Christen's goat weighs 24 pounds. He has been gaining 4 pounds every month as he grows. If this pattern continues, how much will the goat weigh 6 months from now?
The goat will weigh 48 pounds.
A library has 48 shelves of nonfiction books. There are 6 shelves in each cabinet. How many cabinets of nonfiction books in the library?
There are 8 cabinets of nonfiction books in the library.
What is a symbol? Give an example.
A symbol or letter that stands for an unknown factor. n x = 24.
What are equal groups? Give an example using multiplication.
Groups that have the same number of objects. For example, 5 X 6 = 30. There are 5 equal groups of 6 in 30.
An artist sells 4 paintings for $20 each, 4 sculptures for $60 each, and 4 photographs for $10 each at her art show. How much money does the artist make on these sales in all?
(4 x 20) + (4 x 60) + (4 x 10) = $360
The shows part of a multiplication table. Find the missing numbers.
40 45
48 a
b c
a = 54
b = 56
c = 63
Invitations cost $3 for a pack of 8. Lori gives the cashier $20 to buy invitations and gets $11 in change. How many packs of invitations does Lori buy? Show your work.
3 packs
$20- $11 = $9, or the cost of the invitations.
$3 x p = $9; p = 3