Writing expressions & equations
the product of 5 and s
5s
What is the rule for the following pattern?
36, 43, 50, 57,64
add 7
True or False.
A car traveled 20 miles and stopped every 4 miles. How many stops did it make?
This problem represents 4x = 20
False
Which equation correctly represents "A number increased by 4 is equal to 10"?
A. n × 4 = 10 B. n - 4 = 10 C. n + 4 = 10 D. n ÷ 4 = 10
C. n+4 =10
What is the variable in the equation down below?
5-r = 2
Write an expression for...
“4 less than a certain number”?
any variable - 4
What is the rule for the following pattern?
63, 54, 45, 36, 27
Subtract 9
Which scenario best represents the equation 18=n+7
a)A football team scored 18 points in total. They lost 7 points due to penalties. How many did they originally score?
b) David had some balloons. He bought 7 more and now has 18. How many did he have at first?
c) Lisa baked 18 cookies and gave 7 away. How many does she have now?
b) David had some balloons. He bought 7 more and now has 18. How many did he have at first?
a box full of cookies shared by 8 people
a) n-8
b) n ÷ 8
c) 8 ÷ n
d) n − 8
b) n ÷ 8
True or False. The expression down below is telling me to multiply.
34g
True
Write an expression for...
Stacy has 240 books and s number of shelfs to display them. She will put an equal number of books on each shelf.
240 / s
input. output
2 4
8 16
5. 10
? 12
6
Bella brought stickers to school to give to 12 of her friends. Each friend received 4 stickers. How many stickers did Bella bring to school? Let “s” represent the number of stickers Bella brought to school.
12 x 4 = s
Julie lost four beads from her bracelet. It still has 23 beads. Which number sentence could be used to find b, the number of beads that were originally in the bracelet?
a) b ÷ 4 = 23 b) b x 4= 23 c) b + 4 = 23
d)b-4=23
d) b-4 = 23
True or false. All of these statements are correct.
A symbol can be used to stand for a variable.
An empty box can be used to represent a variable.
A variable can be represented by a letter.
A variable is used to represent an unknown number in an equation.
True
A teacher has 45 pencils and gives them equally to n students. Each student gets 5 pencils. How many students are there?
45 / n = 5
Whats the 7th term of the pattern?
0, 9, 18, 27, 36,....
54
Which problem situation could be solved by using the equation? 30g = 150
A) A Ali read 150 pages of a book on each of g days. How many books could he read in 30 days?
B )Ali read 30 pages of a book on each of days. He read 150 pages in all. How many days did he spend reading the book?
B )Ali read 30 pages of a book on each of days. He read 150 pages in all. How many days did he spend reading the book?
Mia wants to share 24 pencils equally among her 6 friends. Which equation represents this situation?
A. p - 6 = 24
B. 24 × p = 6
C. 24 ÷ 6 = p
D. 6 ÷ 24 = p
C. 24 ÷ 6 = p
There are some tables in the cafeteria. Each table can seat 10 students. Marta wrote the expression to determine how many seats there are altogether in the cafeteria. What does the B represent in the expression ?
B × 10
Number of students
Number of seats
Number of tables
Number of tables
Write an equation for Marcus had 12 piles of marbles. There were 19 marbles in each pile. How many marbles did Marcus have in all? Use "m" for the amount of marbles in all.
12 x 19 = m
4, 12, 36, 108, 324
Which of the following patterns uses the same rule?
A 15, 30, 60, 120, 240
B 9, 18, 36, 72, 144
C 6, 9, 12, 15, 18
D 3, 9, 27, 81, 243
d)
3,9,27,81,243
Which situation could be represented by m + 4 = 16?
a) Rocco had 4 marbles. He bought some more marbles for a total of 16. How many marbles did he buy?
b) Rocco had 16 marbles. James gave him 4 more marbles. How many marbles does Rocco have
now?
a) Rocco had 4 marbles. He bought some more marbles for a total of 16. How many marbles did he buy?
What is the correct verbal expression for the algebraic expression x+8?
A. A number x decreased by 8
B. The sum of a number x and 8
C. The product of a number x and 8
D. A number x divided by 8
B. The sum of a number x and 8
In the equation 7 + □ = 12, what does the box represent?
A. The answer to the problem
B. A missing or unknown number
C. A number that is always 7
D. A multiplication symbol
B. A missing or unknown number