Vocabulary
What is a zero pair?
A zero pair is a pair of numbers that are opposites, and sum is equal to zero.
Name this symbol: >
Greater than
22
A town’s low temperature for January was -8 degrees Fahrenheit. The difference between the town’s high temperature and low temperature for January was 25 degrees Fahrenheit. What was the town’s high temperature, in degrees Fahrenheit, for January?
17
9x − 7 = −7
What is the commutative property?
The Commutative property states that order does not matter. Multiplication and addition are commutative.
a+b=b+a
a*b=b*a
Name this symbol: <
Less than
Determine the value of the expression
-3.45 + 4.23 -7.55
-6.77
Ken spent half of his money. The next day he earned $12. He now has $32. How much money did Ken have before he spent his money?
m/2 + 12 = 32
m = $40
Ken had $40 before he spent anything.
(v + 9)/ 3 = 8
15
What is the absolute value?
The absolute value of a number is its distance from zero. The absolute value is never negative.
Name this symbol: ≥
Greater than or equal to
Complete the equation to make a true statement:
Number bank [-7, -4, -2, 1, 2, 3]
7 - ___ = 7 + ___
7 - (-2) = 7 + 2
Jonas, his wife and their 3 children made a trip to the Indiana state fair. Jonas spent $16 on entry tickets for adults. If he paid $23.50 for the entry tickets in total, how much did the entry fee for each child cost?
16 + 3x = 23.5
x = $2.5
2(n + 5) = −2
-6
Subtraction is ...
Subtraction is adding the opposite.
Name this symbol: ≤
Less than or equal to
Convert this fraction to a decimal
136/3
45.33
A group of four people ate dinner at a restaurant. They divided the remainder of the bill equally and each person left an additional $2 for the tip. They each paid $14. Write and solve an equation to determine the amount of the total bill?
b/4 + 2 = 14
b = 48
−6 = (n/2) − 10
8
What is an additive inverse?
What you add to a number to get zero.
The negative of a number.
What does a closed/shaded circle mean and an open/unshaded circle mean?
A closed/shaded circle mean the number is included and an open/unshaded circle means that the number is not included.
Convert to a fraction
12.45
12 45/100 = 12 9/20
The Smith family spent $52.00 on concert tickets. This cost included a $3.25 service fee for buying them online and the original cost of the ticket was $9.75 each. How many tickets did the Smiths buy?
t = 5
The sum of three consecutive numbers is 72. What is the smallest of these numbers?
23