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Unit 1 Study Guide. Find the Product. Find the GCF of 24 and 48. What is the first step when you add or subtract decimals?. Find the LCM of 8 and 22. 59.28 ÷ 3.8 =. 14. Change to an Improper Fraction. 15.07 + .98 + 9.23 + 102.034 =. Find the GCF and LCM Of 18, 24, and 8.
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Unit 1 Study Guide
Find the GCF of 24 and 48
Find the LCM of 8 and 22
Change to an Improper Fraction
Find the GCF and LCM Of 18, 24, and 8
A new book at the store costs $53.07. You have a $22.78 credit at the store. How much money do you need to bring to the store to buy the book?
Adding Fractions • 1. Set up Vertically • 2. Find Least Common Denominator • 3. Add • 4. Simplify
Subtracting Fractions • 1. Set up Vertically • 2. Find Least Common Denominator • 3. Borrow if needed • 4. Subtract • 5. Simplify
Multiplying Fractions/Mixed Numbers • 1. Set up in fraction form • 2. Multiple numerator by numerator • 3. Multiply denominator by denominator • 4. Simplify
Dividing Fraction/Mixed Numbers • 1. Set up on fraction form • 2. Keep first fraction the same • 3. Change division to multiplication • 4. Multiply by the reciprocal • 5. Simplify
Tom rode his bike 2/5 of a mile and walked another 1/4 of a mile. How far did he travel?
Your grandma's chocolate chip cookie recipe requires 3/4 of a cup of flour. If you're making a double recipe, how much flour should be used?
Little John had $8.50. He spent $1.25 on sweets and gave to his two friends $1.20 each. How much money was left?
A piece of cloth measuring 48 m in length is cut to 3/4 of its length. How many meters in length are there in the piece that has been removed?
Hot dogs a sold in packages of 8 and hot dog buns are sold in packages of 12. If you want to have the same number of hot dogs and hotdog bums, how many packs of each do you have to buy?
Adding and Subtracting Decimals • 1. Line up decimals • 2. Add zeros if wanted • 3. Add or Subtract
Multiplying Decimals • 1. Set up with problem with the number that • has the most digits on top • 2. Multiply • 3. Count the total number of decimal places in • the numbers being multiplied • 4. Place the decimal using the previous • number counted (Count the places from • right to left)
Multiplying Decimals Example 1. 2.234 x 7 2. 2.234 x 7 1 5 6 3 8 3. 2.234 ----> 3 places x 7 ----> 0 places 1 5 6 3 8 4. 2.234 x 7 1 5.6 3 8 <---- place decimal 3 places counting from right to left
Dividing Decimals • For problems with decimal in dividend only (dividend ÷ divisor = quotient or number inside the box) • Move decimal up • Divide • For problems with decimal in divisor (dividend ÷ divisor = quotient or number outside the box) • Move decimal in divisor (number outside the box) • Move decimal in dividend (number inside the box) • Move decimal up • Divide