Prime and Composite
What is a prime number?
A number with 1 and itself as factors
What does the "P" in PEMDAS stands for?
Parenthesis
Add:
3/6 + 2/6
5/6
Which kind of clock shows the actual time?
Which kind of clock do you have to calculate the time?
Digital
Analog
What is the formula for area?
length times width
Which numbers are prime?
1, 2, 4, 5, 7, 9, 300
2, 5, and 7
What is the saying that helps you remember the order of operations (PEMDAS)?
Please Excuse My Dear Aunt Sally
Compare:
5/8 ___ 3/4
< (less than)
Polly is jumping in the mud on a rainy afternoon. Her watch shows:
3:00
What time is it? 3:00 a.m. or 3:00 p.m.?
3:00 p.m.
What is the formula for perimeter?
length + width + length + width
2 times the length + 2 times the width
List all the factors of 12.
1, 2, 3, 4, 6, 12
Solve:
4 + 3 − 8 ÷ 2
3
Which fraction is equivalent to 2/3?
A. 1/2 B. 3/4
C. 4/6 D. 1/3
C. 4/6
It takes Marcel 18 minutes to get ready for dance class. Marcel starts getting ready at 5:15 p.m. What time does the clock show when Marcel is ready for dance class?
5:33 p.m
What is the area of a rectangle with a length of 3 inches and a width of 6 inches?
18 inches2
List all the factors of 24.
1, 2, 3, 4, 6, 8, 12, 24
Solve:
(10 − 7 + 4) × 2
14
While taking inventory at her pastry shop, Jenna realizes that she had 4/6 of a box of baking powder yesterday, but the supply is now down to 2/6 of a box. How much more baking powder did Jenna have yesterday?
2/6 or 1/3
Ava decided to write a letter to her grandmother. She began writing at 7:30 P.M. Ava finished the letter at 8:00 P.M. How long did it take to write the letter?
30 minutes
What is the perimeter of a square with a side length of 5 centimeters?
20 centimeters
What number is neither prime nor composite?
1
Margot got 10 books for her birthday. She already had 5 books. Her brother has 3 times as many books as Margot. How many books does Margot's brother have?
45 books
For a class experiment, Katy's class weighed a log before and after subjecting it to termites. Before subjecting it to termites, the log weighed 3/4 of a pound. After the termites, the log weighed 2/4 of a pound. How much weight did the termites take from the log?
1/4
It started hailing at 8:15. The hail stopped 1 hour and 15 minutes later. What time was it when it stopped hailing?
9:30
Emily wants to know how much fencing she should put around her square garden. One side is 4 meters long. Each meter of fence costs 3 dollars. How much money will Emily need to put a fence around her garden?
48 dollars