Equations

Variables on Both Sides

100

Solve.  5y – 8 = 3y + 12

y = 10

200

Solve.   5x + 2 = 2x – 10

x = –4

300

Solve.   –11 – 3y = 8y + 1

y = –12/11

400

Solve.  5x – 2x = 3x + 2

no solution

500

Solve.   4(2x – 1) = –10(x – 5)

x = 3

Multi-Step Equations

100

Solve.   5x + 16 = 51

x = 7

200

Solve.   y/3 + 2 = –12

y = –42

300

Solve.   8 + (3n)/12 = 13

n = 20

400

Solve.   8 = –12 + k/–4

k = –80

500

Solve.   (4x + 8)/–2 = 10

x = –7

Literal Equations

100

Solve for b.    a + b + d = c

b = c – d – a

200

Solve for s.   (s – t)/p = q

s = pq + t

300

Solve for y.   5x – 2y = –33

y = (33 + 5x)/2

400

Solve for x.   6y + 3x – 2z = 1

x = (1 + 2z – 6y)/3

500

Solve for x.   (rx + 9)/5 = h

x = (5h – 9)/r

Proportions

100

6/9 = 8/c

c = 12

200

y/3 = 48/9

y = 16

300

2/y = 10/60

y = 12

400

(r + 2)/7 = 5/7

r = 3

500

3/12 = 2/(x + 6)

x = 2

Pi Day!

100

How many "digits" of Pi were recited this week at our school?

205

200

In 2015, Rajveer Meena (of India) set a Guinness world record by reciting how many digits of Pi?

70,000

300

Two years ago, Peter Trueb, a scientist at the Swiss company Dectris Ltd., used a multi-threaded computer program to calculate digits of pi over the course of 105 days. This took up 8 terabytes of hard drive space. How many digits were calculated?

22,459,157,718,361

400

In addition to being Pi Day, March 14th is also the birthday of what famous scientist?

Albert Einstein

500

In honor of Pi Day, this pizza restaurant is selling pizza "pies" for $3.14.

Blaze Pizza