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Warm-up August 12, 2014 Day 5. Solve the following: 45 X 45 = 25 X 25 = 15 X 15 = 20 X 20 = 13 X 13 = SHOW YOUR WORK . Warm-up answers. 2025 625 225 400 169. Vocabulary.

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Warm-up August 12, 2014 Day 5


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    1. Warm-upAugust 12, 2014Day 5 • Solve the following: • 45 X 45 = • 25 X 25 = • 15 X 15 = • 20 X 20 = • 13 X 13 = • SHOW YOUR WORK

    2. Warm-up answers • 2025 • 625 • 225 • 400 • 169

    3. 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

    4. Absolute Value • The distance from a number to zero on a number line. • Absolute values are ALWAYS positive.

    5. 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

    6. 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)

    7. Subtraction • Keep Change Change (KCC) • Keep the sign of the first number – keep it as it is • Change the problem from subtraction to addition ( - becomes +) • 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!)

    8. Fractions QuizAugust 13, 2013 • You will need a piece of paper and a pencil. • There are 10 questions. • When you are finished with the quiz you may READ silently. • Please hold your quiz papers and we’ll collect them when everyone is finished.

    9. Fractions QuizAugust 13, 2013 • Change these to decimals: • 1) 5/8 4) 3/8 • 2) 1/5 5) 6/12 • 3) 1/2 • Change these to percentages: • 5/8 9) 9/24 • 7) 1/5 10) 3/6 • 8) 1/2