Strong’s GMAS Review, Week 7, Problems 4 - 5

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Presentation transcript:

Strong’s GMAS Review, Week 7, Problems 4 - 5 Warm-up March 21, 2018 Warm-up Strong’s GMAS Review, Week 7, Problems 4 - 5

Vocabulary Absolute Value: The distance between a number and zero on the number line. The symbol for AV is shown in the equation: │ -8 │ = 8 Integers: The set of whole numbers and their opposites (… -2, -1, 0, 1, 2, …) Opposite numbers: Two different numbers that have the same absolute value. Example: 4 and -4 are opposites

More vocabulary Positive Integer: an integer that is greater than zero Negative Integer: an integer that is less than zero Rational Number: the set of numbers that can be written in the form A/B, where A and B are integers and b is not equal to zero

Absolute value The distance from a number to zero on a number line. Absolute values are ALWAYS positive.

Addition SAME SIGNS (both signs are positive or both signs are negative): Add the numbers and keep the sign – 2 positives stay positive, 2 negatives stay negative DIFFERENT SIGNS (one positive and one negative): Subtract the small number from the larger number Keep the sign of the larger number – if positive number is larger, answer is positive; if negative number is larger, answer is negative (absolute value)

Subtraction Keep Change Change (KCC) Keep the sign of the first number – keep it as it is Change the problem from subtraction to addition ( - sign becomes + sign) Change the sign of the second number – positive number becomes negative, negative number becomes positive Use the rules of addition (you changed it to an addition problem!)

Classwork Page 9 in the Common Core book All problems Please don’t write in the books