Prime/Composite
Prime or Composite: 29. Explain your reasoning (I know this because_____)
Prime because it only has 2 factors 1 and itself.
64 – 20 ÷ 5 + 12
72
The Norfolk Tides’ stadium, Harbor Park, holds 11,856 seats. If 9,879 people attend a game, how many empty seats will there be?
1,977 empty seats
The sum of the interior angles in a triangle is what?
If a triangle has two equal sides and all acute angles what is this triangle?
Acute, isosceles triangle
Prime or Composite: 18 Explain your reasoning (I know this because _____)
Composite because it has more than 2 factors.
What is the order of operations? List the steps in order.
Parenthesis, Multiplication/Division, Addition/Subtraction
A farmer collected 278 eggs. He wants to create cartons of eggs to send to the market. If each carton can hold 12 eggs, how many cartons can the farmer fill completely?
23 cartons will be filled completely.
If a triangle has one angle that is 30 degrees, and a second angle that is 80 degrees, what is the third angle?
Name all three types of triangles by sides.
Equilateral, Isosceles, and Scalene.
Which of the following numbers is not composite?
39
53
72
81
2. 53
3 + 7(4 + 4)
59
Stacy wants to decorate her restaurant with a vase of roses on each table. She decides that each vase should hold 24 roses. If there are 72 tables in her restaurant, how many roses does Stacy need to purchase?
1,728 roses
If a triangle has a right angle and an angle measuring 30 degrees, what is the missing angle?
60
Name all three types of triangles by angles.
Acute, right, and obtuse
Definition of a prime number
A number that only has two factors: 1 and itself
(12 + 10 ÷ 2) x 4
68
Peter has 35 pens to share fairly with 6 friends. How many pens will each friend receive?
5 pens
If one angle is 47 and the other angle is 61, what is the missing angle? Classify the angles as well.
72 degrees
Can a right triangle have an obtuse angle? Why or why not?
No it cannot because 90 + an obtuse angle is greater than 180 degrees (the sum of a triangle).
Prime or Composite: 1
Neither, 1 only has 1 factor. Therefore, it is neither prime or composite.
Nate solved this order of operations problem in the steps below.
9 ÷ 3 + (23 - 4 ● 5)
Step 1: 9 ÷ 3 + (19 ● 5)
Step 2: 9 ÷ 3 + 95
Step 3: 3 + 95
Step 4: 98
In which step did he make his first mistake?
A. Step 1
Martin purchased 12 packages of large paper plates and 13 packages of small paper plates for a school picnic. Each package had 25 paper plates. At the end of the picnic, 97 plates had not been used. How many paper plates were used at the school picnic?
528 plates
Classify this triangle by angles and find the missing angle: 13, 45, ___ ?
122, obtuse triangle
Triangles that are acute and equilateral can be classified into a third category. What is this category and why can it also describe these triangles?
An isosceles triangle because it has two equal sides.