Mystery Math Challenge

Fractions

100

Simplify 8/12

2/3

200

What is bigger? 3/4 or 5/8?

3/4

300

Add 2/3 + 1/6

5/6

400

Subtract 4 1/2 - 2 3/4 

1 3/4

500

Write 0.625 as a fraction in reduced form

5/8

LCM's and GCF's

100

Find the GCF of 12 and 18

6

200

Find the LCM of 4 and 6

12

300

Find the GCF of 24, 36, and 48

12

400

Find the LCM of 8 and 10

40

500

What is the LCM of 14 and 49?

98

Decimals and %'s

100

Write 0.45 as a percent

45%

200

Write 75% as a decimal

0.75

300

Find 20% of 50

10

400

A shirt costs $40. It’s discounted 25%. What is the sale price?

$30

500

Convert 3/5 to a decimal and a percent

0.6 and 60%

Prime Factorization

100

Is 29 prime or composite?

prime

200

Prime factorization of 20

2x 2 x 5

300

Prime factorization of 36 

2 x 2 x 3 x 3

400

Prime factorization of 200 using exponents

2³ x 5²

500

Solve 3² x 2⁴ 

144

AREA & PERIMETER

100

Formula for the area of a rectangle

A=l×w

200

Find the area of a rectangle with length 8in and width 5in

40in²

300

Find the perimeter of a rectangle with a length of 10ft and a width of 4ft

28ft

400

A square has a perimeter of 32cm. What is one side length?

8cm

500

A rectangle has an area of 72m² and a width of 6m. What is the length?

12m