Area
How do you find the area of a shape?
By multiplying the two sides (dimensions) of the shape.
Write an equation and solve the problem.
Caitie is six times as tall as her puppy. If the puppy is 20 cm tall, how tall is Caitie?
20 x 6 = 120 sq cm
Solve the problem:
30 x 7 =
210
What does the R in this equation stand for
46 divided by 5 = 9 R 1
100 x 9 =
900
A rectangle is 3 ft by 40 ft. It has an area of 120 sq ft.
What is an equation describing the area of the rectangle?
3 x 40 = 120 sq ft
or
4 x 30 = 120 sq ft
Write an equation and solve the problem.
Mark is building a new pen for his pigs. The pen is 18 ft by 10 ft. What is the area of the pen?
18 x 10 = 180 sq ft
True or false?
12 x 10 = 10 x 12
True
Can you make 5 equal groups with 26 pieces of candy? Why or why not?
No, because there will be 5 equal groups of 5 with 1 piece of candy left over.
6, 12, 24, 48
What is the rule for this pattern?
x by 2
A rectangle has the dimensions 5 ft by 100 ft.
What is the area of the rectangle?
500 sq ft
Melissa's grandma made 17 cookies for Melissa and her three friends. They each want an even amount of cookies. How many cookies will each girl get?
Each girl will get 4 cookies, and one will be left over.
Fill in the blank.
40 x ____ = 160
4
Change the equation to make a division sentence
3 x 8 = 24
24 divided by 3 = 8
OR
24 divided by 8 = 3
Fill in the blank.
18 x 10 = (____ x 10) + (8 x 10)
10
A rectangle has one dimension of 30 ft and an area of 150 sq ft. What is the length of the missing dimension?
5 ft
Lily is building a stage for the class play. The stage is 19 ft by 11 ft. What is the area of the stage?
209 sq ft
Fill in the blank.
120 x 2 = _____
240
Solve the following equation.
32 divided by 5 =
6 R 2
Andre's dad made cookies. He said Andre and his 3 friends could divide 17 cookies evenly. Which equation does NOT show how many cookies they will each get?
a) 17 divided by 4 = 4 R1
b) 17 divided by 4 = $4.25
c) 17 divided 4 = 4 and 1/4
B
If the area of a rectangle is 120 sq ft, what are some possible dimensions of the rectangle?
3 x 40
40 x 3
2 x 60
60 x 2
1 x 120
120 x 1
Lily is making sweaters from her sheep's wool. Each sheep sheds about 8 pounds of wool. If it takes 4 pounds of wool to make one sweater, how many sweaters can she make with 6 sheep?
12 sweaters
True or false?
5 x 500 = (5 + 5) + 100
False
Fill in the blank.
____ divided by 6 = 5 R 2
32
Name composite number, and explain how you know it is composite.
30 because it has more than two factors.