Math Review

CHALLENGE(double points)

100

What's the next number?

1,   6.5  ,   12    ,   ...

17.5

The next number is always the previous plus 5.5

1 + 5.5 = 6.5

6.5 + 5.5= 12

12 + 5.5 = 17.5

200

What's the next number?

2,   4,   8,   16,   32,   64,  ...

128

The next number is always twice the previous number.

300

What is the next number?

1,   9,   25,    49, ...

81

The next number is the square of an odd number.

1² = 1      3^{2 =} 9      5^{2 =} 25        7² = 49   9² = 81

400

What's the next number? 

31,   28,  31,   30,  31,   30,  31,  ... 

31

The numbers represent how many days every month of the year has, starting from January.

Jan   Feb   Mar   Apr   May   Jun   Jul   Ago

 31   28     31     30     31    30    31    31 

500

What's the next number?

2,     3,    10,    12  ...

13

The listed numbers start with the letter "T".

Two, Three, Ten, Twelve, Thirteen.

Math Knowledge

100

Is the number 123.456.789.101.112.131.415 

evenly divisible by 2? Explain.

NO, because a number is only evenly divisible by 2 if its last digit is even (0, 2, 4, 6, or 8).

200

TRUE OR FALSE: Are all the following problems solved correctly?

2² = 4

5² = 25

2^{3 =}  6

4^{2 =} 16

FALSE

2³ =     2 x 2 x 2 =   8

300

2, 3, 5, 7, 11... What is the next Prime number?

13

400

TRUE OR FALSE:  Are all the following problems solved correctly?

3 x 5 + 5  = 20             

4 x 4  + 4  = 20

8 + 2  x  2 = 20

3 x  6  + 2 = 20

FALSE.

Order of operations is multiplication before addition: 8 + (2  x  2 )= 

8  +  (4 ) = 

12

500

Is the number 12345 divisible by 3? Explain your answer.

Yes.

Add every single digit: 1 + 2 + 3 + 4 + 5 = 15

With the result 15, add digits again: 1 + 5 = 6

6 is divisible by 3.

Random Math

100

4³ =

64

200

$ 100  -  $ 26.50 = 

$73.50

300

555+405 =

960

400

What is the result in decimal form of: 

3  1/2    x    3  2/3

12.833

500

10 divided by a half, plus 10 is...

30

Linear Functions

100

If you make $170 per week, how much would you have after 3 weeks?

$510

200

It's your lucky day! 

No question to answer. Get free 200 points!

200 points

300

Starting today, your parents will give you $5 weekly for a whole year.  Considering that a year has 52 weeks, how much money would you get from your parents after 1 year?

$260

 

(52 x 5 = $260)

400

If you pay a $75 fee to enroll in college, and $ 40 per class you take, how much would you pay if you decide to take 3 classes?

 $ 195           ( $75 fee + 3x $40)

500

You pay monthly rent for a place where you sell shirts.

The rent is $400

You sell 10 shirts for $50 each. 

HOW MUCH PROFIT WOULD YOU MAKE ON THIS SCENARIO?

$ 100

Vocabulary

100

Mathematically speaking, what's the DIFFERENCE between 1000 and 100?

In math, DIFFERENCE is calculated using SUBTRACTION.

SO, 1000 - 100 = 900

200

P.E.M.D.A.S stands for what? What's that used for?

PEMDAS is a common mathematical acronym used to remember the order of operations.

Parenthesis, Exponent, Multiplication, Division, Addition, Subtraction.

300

Explain what a Prime number is.

It's a number that can only be divided evenly by 1 or by itself.

400

If a math problem asks you to calculate THE PRODUCT OF THE NUMBERS 2 AND 5, what is the problem asking you to do, or how do you solve it?

 In Math, PRODUCT is the same as MULTIPLICATION. 

So, 2 x 5 = 10.

500

In a fraction like 1/2, the 1 goes to the top, and the 2 goes to the bottom. 

What are the top and bottom parts called?

Numerator (top)

Denominator (bottom)