7th Grade Math: 1st Semester Review

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero, but does not include fractions or decimals.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the total amount by the sales tax rate (as a decimal). For example, for $35.50 with a 4.5% tax rate: $35.50 x 0.045 = $1.60. Total amount owed = $35.50 + $1.60 = $37.10.

Tags

CCSS.6.RP.A.3D

Front

What is the formula to calculate miles per hour?

Back

Miles per hour (mph) is calculated by dividing the total miles traveled by the total hours taken. Formula: mph = total miles / total hours.

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CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What does it mean to be below sea level?

Back

Being below sea level means that a location is at a depth lower than the average level of the ocean's surface.

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CCSS.L.1.6

CCSS.L.3.6

CCSS.L.K.5A

Front

How do you find the new position after descending and ascending?

Back

To find the new position, start from the initial position, subtract the descent, and then add the ascent. Example: Starting at -240m, descending 160m gives -400m, then ascending 390m gives -10m.

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CCSS.7.NS.A.1C

Front

What is a temperature drop?

Back

A temperature drop refers to a decrease in temperature, often measured in degrees. For example, a drop of 3 degrees each hour for 6 hours results in a total drop of 18 degrees.

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CCSS.7.EE.B.3

Front

What is the significance of negative numbers in real-life situations?

Back

Negative numbers can represent values below a reference point, such as temperatures below zero or depths below sea level.

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CCSS.6.NS.C.5

Front

How do you interpret a negative result in a math problem?

Back

A negative result often indicates a loss, a decrease, or a position below a reference point, depending on the context.

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CCSS.6.NS.C.5

Front

What is the total change in temperature after a consistent drop?

Back

To find the total change, multiply the rate of change by the number of intervals. Example: -3 degrees/hour for 6 hours = -18 degrees.

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CCSS.HSF-LE.A.1B

Front

What is the relationship between distance, speed, and time?

Back

The relationship is defined by the formula: Distance = Speed x Time. This means if you know any two of these values, you can calculate the third.

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CCSS.8.EE.C.7B