Vocabulary
Multiplication is repeated __________.
repeated addition
Write the related multiplication equation:
7+7+7+7+7=35
7x5=35
Lily has 3 dogs. Each dog has 4 treats. Which equation shows how many treats the dogs have?
a. 3+4=7
b. 3x4=7
c. 3x3=6
d. 3x4=12
d. 3x4=12 treats
The answer to a multiplication problem is the _____.
Product
Draw an array to show 3x5
teacher check
There are 3 trays on a counter. Each tray has 8 plates. Write an addition equation AND multiplication equation to find the number of plates on the counter.
8+8+8= 24 or 3+3+3+3+3+3+3+3=24
8x3=24 or 3x8=24
factors
What is the unknown in the equation
6 x 7 = 7 x ___
To earn your points: What property did you use to solve? What does this property tell us?
6
Commutative property: you can multiply factors in any order and the product remains the same
Trey makes 4 groups of books. Each group has 9 books. How many books does he have? Select ALL the equations that model the problem.
a. 9x4=36
b. 4x9=36
c. 9+9+9+9=36
d. 4+9= 13
e. 4+4+4+4+4+4+4+4=32
a. b. c.
When each group has the same number of objects, they are _____ ______.
equal groups
Which equations does this array show? Select ALL the correct answers.
OOOO
OOOO
OOOO
a. 3+3+3 b. 3x4=7
c. 4+4+4=12 d. 12=3x4
e. 4x3=12
c. d. e.
Evelyn uses 6 pieces of string to measure the length of a table. Each string ins 5 inches long. What multiplication equation could you write to solve the problem? What is the length of the table in inches?
6x5 or 5x6
The table is 30 inches long.
The _____________ _______________ states that you can multiply factors in any order, and the product remains the same.
commutative property
Larry writes 4 books. Each book has 6 pages. How many pages does he write? Draw a bar model to solve.
teacher check
Lexie measured a shelf using pens. The shelf is exactly 4 pens long. Each pen is 5 inches long. Draw a number line to find the total length of the shelf.
How many inches long is the shelf? Write a multiplication equation to match your model and solve.
Teacher check the number line.
4pens x 5inches = 20 inches