Fishy Equations

Addition Equations

100

x + 18 = 24

x = 6

200

23 = h + 11

h = 12

300

54 = m + 9

m = 45

400

c + 8 = 11

c = 3

500

564 = k + 21

k = 543

Subtraction Equations

100

z - 7 = 11

z = 18

200

14 = m - 5

m = 19

300

72 = g - 20

g = 92

400

c - 41 = 16

c = 57

500

3,761 = y - 5,740

y = 9,501

Writing Equations

100

When Sean stands on a box he is 10 ft. tall. If the box is 4 ft tall, WRITE and SOLVE an addition equation to find Sean's height.

 x + 4 = 10 Solution- x = 6 ft tall

200

Ricky has $39. She has 8 less that her brother. WRITE and SOLVE a subtraction equation to find how much money her brother has.

x - 8 = 39 Solution  x = $47

300

If b - 10 = 5, what is the value of b + 6?

21

400

Amanda is 13 years old. This is four years younger than his brother Adian. WRITE and SOLVE a subtraction equation to find Adian's age.

Equation  x - 4 = 13 Solution x = 17 years old

500

It takes 43 facial muscles to frown. This is 26 more muscles than is takes to smile. WRITE and SOLVE an addition equation to find the number of muscles it takes to smile.

Equation  26 + x = 43 Solution  x = 17 muscles

Fraction Equations

100

s - 1/3 = 7/9

s = 10/9 or 1 1/9

200

n - 1/4 = 3/4

n = 1 or 4/4

300

m + 1/3 = 2/3

m = 1/3

400

2/3 t = 2

t = 3

500

1/2 j = 1/4

j = 1/2

Decimal Equations

100

a - 2.1 = 5.8

a = 7.9

200

4.6 = e - 3.2

e = 7.8

300

a + 6.1 = 8.4

a = 2.3

400

7.8 = x + 1.5

x = 6.3

500

76.325 = x - 21.318

x = 97.643