Mid Year Review

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What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second. For example, a ratio of 7:5 means for every 7 of the first item, there are 5 of the second.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you find the total number of items in a ratio?

Back

To find the total number of items in a ratio, add the parts of the ratio together and then multiply by the number of sets. For example, in a ratio of 7:5, the total parts are 7 + 5 = 12.

Front

If Robby has 48 cattle in a ratio of 7:5, how many Holstein cows does he have?

Back

To find the number of Holstein cows, divide the total number of cattle (48) by the total parts of the ratio (12), then multiply by the Holstein part (7). So, 48 ÷ 12 × 7 = 28 Holsteins.

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CCSS.7.RP.A.3

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. It is expressed as a quantity of one. For example, if there are 156 players on 12 teams, the unit rate is 156 ÷ 12 = 13 players per team.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you calculate the percentage of a total?

Back

To calculate the percentage of a total, multiply the total by the percentage (in decimal form). For example, to find 60% of 11,000, calculate 11,000 × 0.60 = 6,600.

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CCSS.6.RP.A.3C

Front

Back

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CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

How do you convert a fraction to a decimal?

Back

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CCSS.7.NS.A.2D

CCSS.8.NS.A.1

Front

What is the formula to find the number of fans in a stadium based on capacity and percentage full?

Back

The formula is: Number of fans = Total capacity × (Percentage full in decimal form). For example, if the capacity is 11,000 and 60% is full, then Number of fans = 11,000 × 0.60 = 6,600.

Tags

CCSS.6.RP.A.3C

Front

What does it mean if a stadium is 60% full?

Back

If a stadium is 60% full, it means that 60 out of every 100 seats are occupied.

Front

How do you find the total number of teams if you know the total players and players per team?

Back

To find the total number of teams, divide the total number of players by the number of players per team. For example, 156 players ÷ 13 players per team = 12 teams.

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CCSS.3.OA.A.3