Vocab
Each digit in a number has a ___________.
Hint: ones, tens, or hundreds
place value
Using multiples of 10 and the Distributive Property to solve this equation:
5x60=
Some examples include:
5x60= 5x(10+10+10+10+10+10)
5x60=5x(30+30)
5x60= 60+60+60+60+60+60
5x60=300
Use the Associative Property to write and solve this equation: (remember to use a multiple of 10)
2x40
2x(4x10)
(2x4)x10
2x40=80
How many groups of 10 are in 80?
8 tens
Solve:
5x30= ___tens
5x30= ____ tens
5x30= _________
5x30= 150
_____________ of 10 ALWAYS have a 0 in the ones place.
Multiples
Using multiples of 10 and the Distributive Property to solve this equation:
7x40
Some examples include:
7x40= 40+40+40+40+40+40+40
7x40= 7x(40+40+40+40+40+40+40)
7x40= 7(20+20)
7x40=280
Use the Associative Property to write and solve this equation: (remember to use a multiple of 10)
60x3
(6x10)x3
6x(10x3)
60x3=180
How many groups of 10 are in 370?
37 tens
Solve:
6x40= ___tens
6x40= ____ tens
6x40= _______
6x40= 240
The numbers being multiplied in an equation are called _______________.
factors
Michael is decorating his swimming pool wall that has 6 rows of 30 tiles.
Complete this equation to find the total number of tiles he will need to use:
6 x 30 = _____ x (10+10+____)
6x30= 6x(10+10+10)
6x30=180 tiles
Use the Associative Property to write and solve this equation:
70x5
(7x10)x5
7x(10x5)
70x5=350
How many groups of tens are in 420
42 Tens
Draw me an open number line to show 5x30 and solve.
There should be 5 groups of 30. There should be 5 jumps that add 30 every time.
5x30=150
The answer to a multiplication equation is called __________.
The Product
Complete this equation to find the product.
3 x 70 = 3 x (__x __)
3 x 70 = (__x __) x 10
3 x 70 = ____ x 10
3 x 70 = _____
3 x 70 = 3 (7x10)
3 x 70 = (3 x 7) x 10
3 x 70 = 21 x 10
3 x 70 = 210
Use the Associative Property to find
2x50=
2x50= 2x(5x10)
2x50=(2x5)x10
2x50=100
How many groups of 10 are in
8 x 80
64 tens
8x80= 640
Solve
8x30 and 6x40
Do they have the same product?
Yes they both equal 240.
An ______________ is a plain line that can be used to help you multiply.
Open Number Line
Complete this equation to find the total number of tiles he will need to use:
9 x 50 = _____ x (10 +10 + 10 + ___ + ____)
9 x 50 = __________
9 x 50 = 450
Wanda finds 3x80 by using 3x(8+10). Is she correct? Explain.
No. She should be suing 3x(8x10) which equals 240.
Sam finds the product of 4x30 and Leah finds the product of 50x4. Sam says his product has a greater number of tens than Leah's. Is he correct? Explain and tell me how many tens each person has.
No he's not correct.
Sam has 12 tens and Leah has 20 tens.
Vickie has 10 bags of marbles. Each bag holds 9 marbles. How many marbles does Vickie have?
___ marbles.
90 marbles.