7th Grade Math Semester in Review! | Baamboozle - Baamboozle

12 x 2

24

2 x 11

22

77 divided by 7

11

45 divided by 5

9

72 divided by 8

9

49 divided by 7

7

6(4m + 7)

24m + 42

4x - 2x + 3x

5x

5m + 8 + 3m + 7

8m + 15

5 divided by 20

4

8 x 4

32

10 x 9

90

100 divided by 10

10

5 divided by 5

1

negative times negative....

positive

find a: a - 9 = 15

a = 24

what place value is the 8 in 945.47892

thousandths

what place value is the 0 in 1,746.4450

ten thousandths

what place value is the 3 in 456.9376

hundredths

1/2 + 7/4

9/4

simplify 16/30

8/15

2/3(0.8)

16/30

simplify 20/42

10/21

5/6 x 4/7

20/42

1 divided by 1

1

10x - 8x + 2 + 10

2x + 12

solve 3(m - 5) + m

4m - 15

solve 4(2b + 2) - 3

8b + 5

solve 8(2k + 1 + 3k)

40k + 8

25 divided by 5

5

90 divided by 9

10

8 divided by 2

4

81 divided by 9

9

63 divided by 9

7

How do you express 76% as a fraction? (don't simplify)

76/100

Who is the best sub at BMS?

Mrs. Krebs!!

What is the mode?

most common number (can be no mode, or more than 1 mode)

What is the MAD?

find the mean, find the distance each point is from the mean, then find the average of those numbers

What is the IQR?

Q3 - Q1 = IQR

What is the mean?

average/ add all numbers, divide by the number of numbers

How do you express probability? What is the correct notation?

P ( ) =

What is the sample space of a probability question?

All of the possibilities

Solve: 53 + z + 18 = 180

z = 109

Perimeter is measured in what type of units?

cm, m, inches (not squared or cubed)

Area is measured in what type of units?

squared

Find the area of a triangle with a base of 3cm and a height of 8cm.

(1/2) 3 x 8 = 12 cm squared

How can you solve a proportion?

cross multiply, then divide/ butterfly method

Lily paid $6 for 3/8 lb of nuts. What is the cost of 1 lb?

$16

What does the "m" represent in the equation y = m x + b?

Slope, rate of change, rise/ run

What does the "b" represent in y = m x + b?

y intercept/ starting point/ initial value

What is "slope intercept form"?

y = m x + b

Solve: 15n - 25 > 150

n >11.67

What is the area of a rectangle with a width of 3w and a length of 4?

A = l x w A = 12w

Solve: (2/3)x = 266

x = 399

Solve: 2x - 7 = -6

x = 1/2

Simplify: 3s + 3 + 2s - 9 = ?

5s - 6

What is a rational number?

A number that can be expressed as a fraction

-5 + 8 = ? (no calculator!)

3

Absolute value

distance the number is from 0 (trick: make it positive)

Sarah buys 3 pencils for $4.50. At this same rate, how much would 5 pencils cost?

$7.50

______ is another name for unit rate.

constant of proportionality

What does the word product imply?

multiplication

In the formula I = Prt, what do the letters stand for?

Interest, Principal, rate, time

What is Mrs. Hall's dog's name?

Stella

What's the additive inverse of -45.20?

45.20

What does unit rate mean?

the amount for ONE

Does the table represent a proportional relationship? How do you know?

Yes (ex. the ratio of mules to bales of hay is 2 to 1 in each scenario)

A pair of shoes is originally $65.40. I have a coupon for 20% off. How much are the shoes after the discout?

$52.32

A graph represents a proportional relationship IF the line is a straight line AND _____

passes through the origin (0,0)

Evaluate a - b if a = 8.54 and b = -4.31.

12.85

-14 - (-3) =

-11

I bought a shirt for $32.50. The state has a sales tax of 6%. What is the total cost of the shirt after tax rounded to the nearest cent?

$34.45

The library started with 12 students signed up for a program. After several weeks, they had 15. What's the percent of increase?

25%

What is -3(5)(-6) ?

90

I bought 8 pencils for $3.20. My friend bought 3 pencils for $1.20. Are these proportional?

Yes. Each spending $0.40 per pencil.

Bob can travel 175 miles in 5 hours. What is his unit rate in miles per hour?

35 miles per hour