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25 terms

7th Grade Midterm Review

STUDY
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Define a rational number.
A number that can be expressed as a ratio or a fraction. As decimals they end (terminated or repeated)
What is the value of 4 to the third power?
64
Simplify the expression 54 ÷ 3 ( 5+1)
108
Name the mathematical property shown.
(RS)T= R(ST)
The associative property.
Name the mathematical property shown.
R(S+T)=RS+RT
The distributive property.
Find the value of the expression: t-jk if t= - 9, j= - 5, and k= -3.
t-jk
- 9 - -5 X - 3
- 9 - +15
-6
Translate into algebraic symbols: "Seven more than half a number is negative twelve" DON'T SOLVE!!! :)
(n÷2) +7= -12
Use the formula for the area of a trapezoid: A= 1/2 h (b₁+b₂) -or- A= ( (b₁+b₂)h ) ÷ 2 Where h is the height and base₁ and base₂ are the bases. If h= 6ft, b₁ =5ft, and b₂ = 9ft, determine the area.
42 ft
Find the value:
|-8 + 4| + |-2| + |6|
12
What is the mean, median, mode and range of the grades:
73, 83, 73, and 90?
Mean- 79.5
Median- 78
Mode- 73
Range- 17
The NYPD makes money from the traffic tickets. It is determined that in order to make enough money to support the department, on average, a police officer on duty must give 30 tickets per month. The table below shows the number of tickets given each month. Find the value of x so that the officer can meet his quota.

January- 27
February-34
March-20
April-x
x=39
The circle graph below shows the popularity of fruits among the students at Woodland Elementary School. Use the graph to determine the percent of the students that enjoy apples.
apples=41%
Calculate the sum of the measures of all interior angles in each polygon:
a Quadrilateral
b Heptagon
c Decagon
a 360
b 900
c 1,440
The measures of two angles of a triangle are 39 and 46. Find the measure of the third angle, then state the type of triangle. You must use two words.
95, obtuse and scalene
The radius of a circle measures 6in. Use π =3.14159... to calculate it's (a) area and (c) circumference.
C=37.7 in
A=113.0 in²
A rectangle base pyramid is shown. Use the formula V= (¹/₃)lwh to calculate the volume.
V=23.333....in³
Use the laws of exponents to simplify and rewrite each:
a 7⁻²
b 7⁴ X 7⁵
c 2⁻⁷
a one over forty nine
b seven to the ninth power
c one over two to the seventh power
Define an irrational number
A number that cannot be expressed as a ratio or fraction. As decimals they do not end or repeat.
Order the following numers from the least to greatest.
|-2|, 2⁰, -10/5, 3⁻², 0⁵

-Find th evalue of each number.
-Place the numbers in order from least to greatest.
-Graph each number on the line (on the worksheet.
-Show the point and label it with the original number given.
(see worksheet and do it on that) and check with answer key)
Joanne is making a gift box with the dimensions below. How much fabric will she need to cover the entire surface area of the box.
220 cm
Joanne is making a gift box with the dimensions below. Find the volume of the box.
200 cm
Find the surface area of this cylinder.
678.6 cm
Find the volume of this cylinder .
226.1 cm
Using the formula, find the surface area of this triangle prism.
201 cm
Using the formula, find the volume of this triangle prism.
216 cm