Basics of integers
Write the integer that represents the scenario:
Withdrawing 84 dollars from a bank account
- $84
What's the rule if adding integers that are:
Same sign? Different signs?
same sign: add the values, keep the sign
Different sign: subtract the values (big-small), keep the sign of the stronger one
Write the ratio as a percent: 9:20
45%
Compare the sets of integers:
-87___-89 -483_____21 -13____13
> < <
Solve:
9+17, (-19)+(-15), -21 + 17, -12 + 16
26, -34, -4, 4
Write the decimals as percents:
0.93, 0.01, 4.2
93%, 1%, 420%
Write the opposite idea and the opposite integer:
There are 52 minutes before a train leaves
it is 52 minutes after a train leaves: 52
What's the rule for subtracting if not "normal" subtraction? (be SPECIFIC, not just the letters)
Keep the 1st number, change the operation (- to +), change the 2nd number to it's opposite
Write the percent as a decimal:
19%, 0.8%, 492%
0.19, 0.008, 4.92
Put the integers in order from least to greatest:
0, -12, 27, -15, 16, -13, 14
-15, -13, -12, 0, 14, 16, 27
Solve:
8-13, 9 - (-18), (-7) - 12, (-15) - (-8)
-5, 27, -19, -7
Write each fraction as a percent:
12/25
48%
Put the integers in order from greatest to least:
0, -14, 38, 29, -58, 28, -59
38, 29, 28, 0, -14, -58, -59
Solve: Sarah went shopping and forgot all she had learned in money wise. Oh NO! Before she went shopping, she had $57 in her account. After her shopping day, she owed a debt of $29. How much did she spend?
57 - (-29) = 57 + 29 = 86
She spent $86
Write the fraction as a percent
2/9
22.222...%