Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Warm-up August 15, 2016 Solve the following: 1. 3/5 + 2/5 = 2. 1/3 + 2/3 = 3. 3/5 + 3/6 = 4. 2/3 + 3/5 = 5. 5/6 + 5/6 = Vocabulary 1. Absolute Value: The distance between a number and zero on the number line. The symbol for AV is shown in the equation: │ -8 │ = 8 2. Integers: The set of whole numbers and their opposites (… -2, -1, 0, 1, 2, …) 3. Opposite numbers: Two different numbers that have the same absolute value. Example: 4 and -4 are opposites More vocabulary 1. Positive Integer: an integer that is greater than zero 2. Negative Integer: an integer that is less than zero 3. 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) Addition Song • • • • Same sign add and keep Different sign, subtract Keep the sign of the larger number Then you’ll be exact (To the tune of Row, Row, Row, your boat) Addition on a Number Line • Always start at ZERO • Draw your arrow from 0 to the first number in the equation. • Always start your second number where the arrow for the first number ends. • Draw the second arrow the length of the absolute value of the number. 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!) Subtraction on a Number Line How? Class work Common Core Workbook • Page 4 • Problems 1 through 10 • REMEMBER – YOU WILL BE DRAWING AND USING A NUMBER LINE TO SOLVE EACH PROBLEM (10 number lines!)