Download Approved by DESE 4/2014 Acute Scalene Right Isosceles Obtuse

Common Denominator
1. List mutliples of the first number: start with the number
and multiply by 1, 2, 3 etc.
2. List multiples of the second number
3. Circle the smalles number they have in common
Fractions
area is units²
Add/Subtract Fractions
Measurement
volume is units³
12 inches = 1 foot
1. Find common denominator
2. Add/Subtract
3 feet = 1 yard
Multiply-“divide out” and multiply
1 centimeter = 10 millimeters
1. Mixed numbers change to improper
fractions
2. Multiply
1 meter = 100 centimeters or 1000 millimeters
1 kilometer = 1000 meters
Divide-multiply by the reciprocal
1. Mixed numbers change to improper
fractions
2. Change division sign to
multiplication
3. Write the reciprocal of the second
fraction
4. multiply
Mean:
Statistics
Median: man
Range: subtract
Graphing (x,y)
Transformations
Translation
Rotation
Reflection
Approved by DESE 4/2014
Acute
Scalene
Right
Isosceles
Obtuse
Equilateral
7th Grade MCAS INDIVIDUALIZED REFERENCE SHEET
Converting Fractions/Decimals/Percents
Decimal→%: move decimal
Probability
P= favorable outcomes
total outcomes
%→decimal: move decimal
%→fraction: write % over 100
Percent equation: % ∙ whole = part
Proportions
Criss-cross is equal
A = C
AD=BC
B
D
Integers
│absolute value │
Addition
negative + negative = negative
positive + negative = subtract and use
sign of the “larger” number
Subtraction (add the opposite)
1. Copy 1st number
2. Change subtraction sign to
addition
3. Change the sign of the second
number and add
Multiplication and Division
same signs = positive answer
different signs = negative answer
Approved by DESE 4/2014
Decimals
Add or Subtract
1. Line up decimal points
2. If necessary add zeros
3. Bring decimal point straight down
4. Find the sum or difference
Multiply: after you multiply, count the number of
decimal places
Dividing:
1. If the divisor has a decimal point, move
the decimal point in the dividend
2. Bring the decimal point straight up into
the quotient and divide