Multiplication
Create equal groups to solve 3 x 8 =
3 groups of 8 = 24
What is the name for the model that is equal rows of objects?
An array
What is the double of 3?
What is the double of 5?
6, 10
Mrs. Legard set up 3 tables with 6 chairs at each one. How many chairs are there in all?
18 chairs in all
What two things do you multiply together to find the area of a rectangle?
Length x Width
Draw an array to solve.
4 x 5 =
4 rows of 5 = 20
What is the name of the model that is in the shape of a rectangle and split into equal groups of objects?
A tape diagram or bar model
How can you use a 2's fact to find the product of 4 x 8? Find the product!
2 x 8 = 16
16 + 16 = 32
4 x 8 = 32
Mrs. Brown ran 3 miles each day for 7 days. How many miles did she run in total?
She ran 21 miles.
Find the area of a 4 cm x 6 cm rectangle.
24 square cm
Draw a tape diagram to solve.
7 x 6 =
7 boxes of 6 = 42
What model would you use to solve this problem?
Mrs. Fricke set up 6 rows of 5 desks. How many desks did she set up in all?
An array because it is talking about rows!
How can you use a 5's fact to solve 10 x 6.
5 x 6 = 30
30 +30 = 60
10 x 6 = 60
There are 6 Halloween spiders. How many legs in all?
6 x 8 = 48 legs
Find the area of a 2 foot x 9 foot garden. What is the area of the garden?
18 square feet
Look at this equation.
4 x 3 = 12
Kendra says the repeated addition equation to represent this is 4 + 4 + 4 + 4. Maggie says it is 3 + 3 + 3. Who is correct?
Neither! The first factor tell the number of groups, and the second factor tells the size. So it should be 4 groups of 3, or 3 + 3 + 3 + 3
What model would you use to solve this problem?
There are 12 vases with 3 flowers in each vase. How many flowers are there in all?
Equal groups! The problem is describing equal groups of flowers.
How can you use a 3's fact to solve 6 x 6?
3 x 6 = 18
18 + 18 = 36
6 x 6 = 36
Jenny and 7 friends go to a haunted house. They each scream 5 times. How many times did they scream in all?
8 x 5 = 40 screams
Miss Hoppe's rug is 8 feet by 10 feet and Mrs. Brown's rug is 7 feet by 12 feet. Find the area of both rugs. Whose rug has a larger area?
8 x 10 = 80 square feet
7 x 12 = 84 square feet
Mrs. Brown's is larger