Math Processes

Question 1

PS Process

Answer 1

Glance Read Jot
Organize Reflect
Solve

or

*Understand *Plan *Solve

Question 2

DS Process

Answer 2

Identify Value or Y/N Question
Separate Given Information from Question
Rephrase Question (simplify)
Use Answer Grid to Evaluate Statements

Question 3

PEMDAS

Answer 3

Parentheses, Exponents, Multiplication & Division, Addition & Subtraction

Question 4

Testing Cases Process

Answer 4

1) Determine possible cases
2) Choose numbers that work for the statement (only numbers that are allowed)
3) Try to prove the statement insufficient

Question 5

When to use which form of FDP Equivalents

Answer 5

Fractions for Multiplication and Division
Decimals or Percents for Addition, Subtraction
Decimals or Percents for Comparisons
Decimals or Percents for Estimations

Question 6

Decimal Operations

Answer 6

Addition and Subtraction: Line up the decimals

Multiplication - multiply ignoring decimal point. Total the digits in original numbers to right of decimal point. Adjust final number so that it has the same number of digits to the right of the decimal point.

Multiplication - move decimal points in numbers in opposite directions to make easier

Division - If decimal point in dividend (number under the sign), just bring straight up and do division normally

Division - if decimal point in the divisor (outer number), shift decimal point in both divisor and dividend (SAME direction) until divisor is whole number. (Compensation)

Question 7

Tips for Testing Cases

Answer 7

1) Follow restrictions - only those that are allowed
2) Try Positive and Negative numbers
3) Odds and Evens
4) Integers and fractions (proper fractions)

5) Value questions - sufficient if there is only one answer, insufficient if 2 or more possible answers

Yes/No questions - sufficient if always Yes or always No
Insufficient if Maybe, or Sometimes Yes, Sometimes No

Question 8

Percent Change

Answer 8

Change in Value / Original Value

Question 9

Interest Formula

Answer 9

T = P(1+ r/n)^nt

Question 10

Smart Numbers Process

Answer 10

0) Recognize that you can chose smart numbers
1) Choose Smart Numbers
2) Solve using smart numbers
3) Plug in smart numbers into answers and find match

Question 11

Tips for Smart Numbers

Answer 11

Use only when no real values are used in the question or answers - fractions, percents, relative or using variables

Follow given constraints. If have to pick more than one variable, pick diff numbers. Pick with different characteristics

Avoid choosing 0, 1, or numbers already in problem.

Choose numbers that work easily. 100 is often best for percent problems, fraction problems, use common denominator