7th grade math B4 fall break

Gems

100

5×(3^2−2^3)+6

11

200

(8+2^3)÷(4×3)+5

5.3...

300

3^2+(2^2×5)

29

400

3x-9=2x+4^2

x=5

500

Solve for x: 9x+3=21

x=2

Exponents

100

3^2 x 3^3

3^5 

200

Simplify (x^3)^4

x^12

300

Simplify 5^-2

any number to a negative exponent equals one over that number to a positive exponent.

400

8^5/8^2

8^3

500

simplify 2x((2x^2)^2)

Show in class!

Radical expressions

100

What is the square root of 49

7

200

Simplify the square root of 75

5 times the square root of 3

300

2 times the square root of 4 times 9 times the square root of 6

18 times the square root of 24, simplify further in class

400

the square root of 2 times the square root of 8

4

500

The cubed root of 27

3

Approximating irrational numbers

100

What is the approximate value of the square root of 2

1.41

200

Simplify the square root of 72

6 times the square root of 2

300

Simplify the square root of 25 times the square root of 2

5 times the square root of 2

400

Simplify the square root of 45

3 times the square root of 5

500

Simplify the square root of 98

7 times the square root of 2

Just for fun

100

What fruit is known for having seeds on the outside, rather than the inside?

• The strawberry is the only fruit that has its seeds on the outside. Each strawberry has about 200 seeds!

200

In which ocean can you find the Bermuda Triangle?

• The Bermuda Triangle is located in the Atlantic Ocean, roughly between Bermuda, Florida, and Puerto Rico.

300

What is the rarest blood type in humans?

AB negative is the rarest blood type, occurring in less than 1% of the population.

400

What animal can hold its breath longer than a dolphin?

• A sloth can hold its breath longer than a dolphin! Sloths can slow their heart rate and hold their breath for up to 40 minutes underwater, while dolphins can only hold theirs for about 10 minutes.

500

What was the original use of bubble wrap?

• Bubble wrap was originally invented to be used as wallpaper! The creators thought it would make a cool textured wall covering before realizing its protective packaging potential.