Formulas
Calculate Area & Perimeter
Calculate Area & Perimeter
Rounding
Place Value/ random
100
The ___________ is calculated using length × width or base × height.
What is the area formula of a rectangle or square?
100
Your school is building a new swimming pool. The pool will be 25m long, and 19m wide. How much space, in square meters, will this pool take up?
A = 25 · 19 = 475 m2
100
The _____ measures the space inside a 2-dimensional figure.
What is area?
100
If we would round the number 46.432 to the nearest hundredths place what would we get?
a. 46.432
b. 46.43
c. 46.44
d. 47
b. 46.43
100
What number is in the thousandths place? 34578.2854
The answer is 5
200
The __________ is base × height, where the height must be perpendicular to the base.
What is the Area formula of a parallelogram?
200
If the base is 4.5 mm and the height is 11 mm, what is the area of the parallelogram?
4.5(11) = 49.5 mm2
200
The _______ measures the distance around a 2-dimensional shape.
What is perimeter?
200
If we would round the number 453.34567 to the nearest ten-thousandths place what would we get?
453.3457
200
Find the area
The area is 34 square feet!
300
The _______is calculated using the formula
A = 1/2 bxh.
What is the area of a triangle?
300
A triangle has a base of 15 inches and a height of 7 inches. What would the area of this triangle be?
A = 1/2(15)(7) = 52.5 in2
300
A parallelogram has a base of 4 cm, a height of 5 cm, and a side length of 3 cm. What is its area?
A = b(h) = 4cm(5cm) = 20 cm2
300
If we are rounding a number would the circled number have to be 4 or less to round up?
False
300
If I were to ask you to find the area of a rectangle you would multiply ALL lengths and widths together.
a. true
b. false
b. false
400
The _______ is calculated using the formula A=1/2(b1+ b2)h.
What is the area of a trapezoid?
400
A trapezoid has bases 4cm and 6cm and a height of 8cm. find the area.
A = 1/2(4 + 6)(8) = 40 cm2
400
A parallelogram has a base of 2 cm, a height of 6 cm, and a side length of 4 cm. What is its perimeter?
P = sum of all sides = 2cm + 2cm + 4 cm + 4cm = 12 cm
400
The left side of the decimal point has the ending of "ths" and the right side has "s"
false
400
Find the Area
The area of the compound shape is 93 square feet!
500
A = πr2
What is the area of a circle?
500
A taquería makes tortillas that have a circumference of 38 cm. What is the diameter of the tortilla?
C = πd
38= πd cm
d = 12 cm
500
C = 2πr
What is the circumference of a circle?
500
Are the following steps correct for rounding?
Step 1: Underline the place value
Step 2: circle the number next to it
Step 3: if the number circled is four or more you round up.
True
500
If we are rounding a number would the circled number have to be 5 or greater to round up?
True