Ratios and Proportions
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This guide by Ms. Edelstein provides a clear understanding of ratios, which are comparisons of two quantities. It explains the three different ways to express a ratio: as a fraction, with a colon, and in words. Examples include ratios such as 3:4 and 2:9 with corresponding visuals to enhance learning. Practice problems encourage hands-on learning, helping to solidify the concept, while the review section reinforces the importance of correctly ordering ratios to maintain clarity. Perfect for students needing to grasp the fundamentals of ratios.
Ratios and Proportions
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Presentation Transcript
Ratios and Proportions By Ms. Edelstein
Ratio • A ratio is a comparison of 2 quantities. • Though, they are said the same, there are 3 ways to write a ratio: • All of these ratios are read “1 to 2”. • ½ (looks like a fraction) • 1:2 • 1 to 2
Ratios - Examples There is a ratio of 3 smiley faces to 4 lightening bolts. • Written as ¾, 3:4 or 3 to 4. There is a ratio of 2 suns to 9 objects. • Written as 2/9, 2:9 or 2 to 9.
Ratios - Practice What is the ratio of yellow rectangles to blue circles? 1:5
Ratios - Practice What is the ratio of pink rectangles to yellow rectangles? 2:1
Review • Remember a ratio compares of 2 amounts. • There are 3 ways to write a ratio: • All of these ratios are read “3 to 8”. • 3/8 (looks like a fraction) • 3:8 • 3 to 8 • Be careful to write ratios in the correct order so that they can be understood.
