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May 2, 2011. Write your homework in your agenda: Textbook p. 176 #1-9 SHOW WORK! 2) Graph your Computation Challenge. 3) Take out your flip book and a CLEAN piece of loose leaf paper. 4) Here’s your Warm-Up….
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May 2, 2011 • Write your homework in your agenda: Textbook p. 176 #1-9 SHOW WORK! 2) Graph your Computation Challenge. 3) Take out your flip book and a CLEAN piece of loose leaf paper. 4) Here’s your Warm-Up…. When rounding, why do you follow the rule: 5 or higher round up, 4 or less stay the same?
Equations with Decimals 1. Line up the decimal. 2. Add zeros if needed. 3. Addor subtract normally. 4. Bring down the decimal point. 1. Multiply like normal. 2. Count the decimal places in the problem and make your product have the same amount. Move the decimal of the divisor (outside number) to create a whole number. Move the decimal point of the dividend (inside number) the same amount. Bring up the decimal point. Divide.
Look at These Examples 72 = 4.5x 4.5 4.5 x = 16 x/0.19 = 12 (0.19) (0.19) x = 2.28 x + 0.84 = 6 - 0.84 -0.84 x = 5.16 x – 1.9 = 5.4 + 1.9 +1.9 x = 7.3 .00
Let’s Try a Few • x + 5 = 7.3 • x – 3.8 = 2.2 • 0.3x = 72.3 4. x/1.4 = 60 5. x + 1.5 = 3.4 6. x – 2.7 = 2.3 7. 0.03x = 1.89 8. x/0.4 = 125 x = 2.3 x = 1.9 x = 6 x = 5 x = 241 x = 63 x = 50 x = 84
May 3, 2011 • Write your homework in your agenda: Climbing Solutions worksheet DUE 5/5 2) Take out your flip book and a CLEAN piece of loose leaf paper. 3) Take out your HW and leave it on your desk. 3) Here’s your Warm-Up…. EXPLAIN: Is the same as ?
Text p. 176 #1-9 • w = 7 8) y = 1.5 • x = 7.85 9) $4.25 • k = 24.09 • n = 21.25 • b = 5.04 • x = 5.76 • t = 9
Let’s try four more… • x + 0.84 = 6 • x – 32.56 = 12 • 3.2x = 8 • x/2.8 = 4.2 x = 5.16 x = 44.56 x = 2.5 x = 11.76
Equations with Fractions Find the least common denominator. Make equivalent fractions with this denominator. Add your numerators and keep the denominators. Simplify. Multiply your numerators. Multiply your denominators. Simplify YOU CAN’T MULTIPLY OR DIVIDE MIXED NUMBERS…CHANGE THEM TO IMPROPER FRACTIONS! Keep the first fraction the same (keep it) Change your division sign to multiplication (change it) Find the reciprocal of the second fraction (flip it) Multiply your numerators. Multiply your denominators. Simplify