Vocabulary
A numbers distance from 0
Absolute value
Write 1/4 as a decimal and a percent.
0.25 and 25%
Put the integers in order from least to greatest.
-4, 8, 5, -5, -10, 16
-10, -5, -4, 5, 8, 16
Write
3/25
as a decimal.
0.12
Jose earned 50 points in a video game. He lost 40 points, earned 87 points, then lost 30 more points. What is his final score in the video game?
67 points
Any number that can be written as a/b , where a and b are integers and b ≠ 0
Rational Number
What is 45% of 200?
90
(-4) x (-2) x (7)
56
Write 1.65 as a fraction in simplest form.
1 13/20
Mary has $10 in savings. She owes her parents $50. She does some chores and her parents pay her $12. She also gets $25 for her birthday from her grandmother. Does Mary have enough money to pay her parents what she owes them? If not, how much more money does she need?
No, she needs $3 more.
a ratio that compares a number to 100
Percent
60 is ___% of 300.
20%
-45-(-23)+(18)-1+5
0
Write each number as a rational number a/b .
0.25, 5, 3 4/12
1/4, 5/1, 40/12
Ned took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional 10 points for answering a bonus question correctly. How many points did Ned receive or lose overall?
Ned lost 14 points.
the set of all whole numbers and their opposites
Integers
The sales tax in the town where Amanda lives is 7%. Amanda paid $35 in sales tax on a new stereo. What was the price of the stereo?
$500
The temperature on a winter night was -23°F. The temperature rose by 5°F when the sun came up. When the sun set again, the temperature dropped by 7°F. What was the temperature at sunset?
-25°F
Put the numbers in order from least to greatest.
-3.5, 2, -3, 2 1/2 , 11/2
-3.5, -3, 2,
2 1/2, 11/2
Lily and Rose are playing a game. In the game, each player starts with 0 points and the player with the most points at the end wins. Lily gains 5 points two times, loses 12 points, and then gains 3 points. Rose loses 3 points two times, loses 1 point, gains 6 points, and then gains 7 points. Who won the game?
Rose wins with 6 points.
a number that is less than 0
Negative number
Ashton is saving money to buy a new bike. He needs $120 but has only saved 60% so far. How much more money does Ashton need to buy the scooter?
$48
Tanya made a deposit of $250 into her checking account. Then, she withdrew $55. The next day, she wrote a check for $145. She had $350 in her account before any of these transactions. How much money is in her account now?
$400
Put the numbers in order from greatest to least.
−0.6, −5/8, −7/12, −0.72
-0.72, -5/8 , -0.6, -7/12
Marc ordered a rug. He gave a deposit of 30% of the cost and will pay the rest when the rug is delivered. If the deposit was $75, how much more does Marc owe?
$175