Writing Numerical Expressions
Cody bought a hamburger for $3
and a milkshake for $2. He paid for
his meal with a twenty-dollar bill.
Which expression shows how much
change he should receive?
30 - (3+2)
4 x (22 – 2)
80
25 x 18
450
5148 / 12
429
A number with exactly 2 factors, 1 and itself, is composite. True or false.
False, a prime number only has 2 factors, 1 and itself.
Kara is buying movie tickets for
herself and her 2 sisters. The tickets
are $9 each. She is also buying 1
bag of popcorn for $5 and 3 bottles
of water for $3 each. Write an
expression which shows how much
she spent?
(3x9) + (3x3) + 5
(6 x 2) – 4 + 2
10
112 x 36
4,032
6275 / 25
251
Which of the following is NOT a prime number?
17 , 13 , 29 , 27
27, because 3 x 9 if a factor pair for 27
Matt bought 4 packages of cookies.
Each package had 24 cookies. He
ate 9 cookies. Write an expression to
show how many cookies are left.
(4 x 24) - 9
15 + (35 – 10) ÷ 5
20
256 x 82
20,992
Rice Elementary sponsors a math competition for 78 students. During the competition, the students work a total of 8,970 math problems in 4 hours. Each student works the same number of problems. How many problems does each student work?
115
Which number below is a prime factor of 111?
1
111
37
17
37
Kim baked 20 cookies. Her friend
Amy ate 4 cookies, and her brother
ate 2 of the cookies. Which
expression can Kim use to find out
how many cookies are left?
20 - (4+2)
3 + [(3 + 2) x (9 – 6)]
18
Jill sold 528 sets of dinnerware in her garage sale. If each set contained 14 pieces, how many pieces were sold in all?
7,392
Mr. Vega's archery team raised $6,573 selling snack at an archery meet. This amount will pay the registration fee for 48 students to attend an archery workshop. There will be $45 left to start a savings account for next year's workshop. How much does it cost for one student to attend the archery workshop?
136
(6,573-48) / 45
Which number is a prime factor of the composite number 63?
1
21
9
7
7
Jeff and his brother Joe are saving
money to buy a video game that
costs $52. Jeff earns $8 each week
mowing lawns and spends $2 of it.
Joe earns $10 each week and
spends $3 of it. Which expression
can be used to find out how many
weeks it will take for them to save for
the video game?
52 ÷ [(8 - 2) + (10 - 3)]
7 x [(3 x 5) – (2 x 6)]
21
A salesman sells 972 pieces of furniture. If he gets 23 reward points for each piece sold, how many points does he earn?
22,356
During a 24-hour sale, Jada's Jewelry sells 5,760 necklaces online. What is the average number of necklaces Jada's Jewelry sells during each hour of the sale?
240
What factor if the number 144 is neither prime nor composite?
1