Area Libraria!
A rectangle has a length of 6 inches and width of 4 inches. What is the area of the rectangle, in square inches?
6 x 4 = 28 sq. inches
If all sides of a square are 2 inches, what is the perimeter?
Product: 24
Groups: 3
Write a multiplication equation.
3 x 8 = 24
Mr. Chandler and Miss Hill are having a party in their backyard. One side of the yard is 12 feet long, and the width of the yard is 9 feet long. How many square feet do they have to use for the party?
A rectangle has one side of 4 feet and one side of 6 feet. What is the perimeter of the rectangle?
4 + 6 + 4 + 6 =
well... that is 10 + 10 =
20 feet!!!
Sage has 36 coins. She sorts her coins into 9 equal groups. Write an expression that represents how many coins are in each group.
36 ÷ 9
4 coins in each group
Kate says the area of a rectangle with 7 units on one side and 3 units on the other side is 21 sq. units. Is she correct?
Yes!
7 x 3 = 21 sq. units
One side of an equilateral triangle is 8 inches. What is the perimeter of the triangle?
8 + 8 + 8= 24 inches
Write the fact family for 72, 8, and 9
8 x 9 = 72
9 x 8 = 72
72 ÷ 8 = 9
72 ÷ 9 = 8
A square has an area of 49 square centimeters, and one side is 7 cm. Write an equation to explain the missing side length.
7 x 7 = 49, so 7 sq. cm
OR 49 ÷ 7 = 7
Mr. Chandler is building a fence for Cooper. One side of our yard is 12 feet long, and it is 9 feet wide. How many feet of fencing does he need for the whole yard?
12 + 9 + 12 + 9=
Well, 12 + 12= 24
and 9 + 9 = 18
and 24 + 18 = 42 feet!
Miss Hill wrote the expression 6 x 5 on the board. Which of these expressions has the same value?
A. (3 x 5) + (3 x 5)
B. (1 x 6) + (6 x 5)
C. (5 x 2) + (3 x 5)
A. (3 x 5) + (3 x 5)
Because 3 + 3= 6
and 5 stays the same
Mason is making a square pattern. Each side is 5 inches. Is the perimeter of the pattern the same as the area of the pattern? Explain.
NO! Because the perimeter is...
5 + 5 + 5 + 5 = 20 in.
and the area is...
5 x 5 = 25 sq. in.
Rance is making a square pattern. Each side is 4 feet. Is the perimeter of the pattern the same as the area of the pattern? Explain.
YES! Because the perimeter is...
4 + 4 + 4 + 4= 16 feet
and the area is...
4 x 4 = which also equals 16 sq. feet!
What number makes all of these equations true?
? x 3 = 36
120 ÷ 10 = ?
11 x ? = 132
12