Solving Equations

Vocabulary

100

Sum.

What is an answer to an addition problem?

200

Difference.

What is an answer to a subtraction problem?

300

Product.

Quotient.

What is an answer to a multiplication problem?

What is an answer to a division problem?

400

Addition : Subtraction

as

Multiplication : Division

What are the inverse operations?

500

3/4   4/3

5/2   2/5

What is the reciprocal?

Equations involving addition

100

Solve and Check

x + .8 = 1.5

x = 0.7

200

Determine whether a number is a solution of an equation.

h = 1.73

8.78 + h = 9.01

H= 1.73 is not a solution.

h= 0.23

300

Solve and check.

5 = a + 6

a = -1

400

The sum of a number and 3.24 is 10.50. Find the number and complete a check.

N = 7.26

500

The sum of a number and 4 is -5. Find the number and complete a check.

N = -9

Equations involving subtraction

100

Solve and check.

x - 3.7 = 19.01

x = 22.71

200

Determine whether a number is a solution of an equation.

h = 2.64

8.01 - h = 10.65

h = 2.64 is a solution.

300

Solve and check.

1.2 = q - 19.45

q = 20.65

400

The difference of a number and 1.03 is 15.1. Find the number and complete a check.

N = 16.13

500

The difference of a number and 4.81 is 5.08. Find the number and complete a check.

N = 0.28

Equations involving multiplication

100

Solve and check.

2x = 100

x = 50

200

Determine whether a number is a solution of an equation.

h = 9

7h = 49

h = 9 is not a solution.

h = 7

300

Solve and check.

3.4x = 13.6

x = 4

400

The product of a number and 1.03 is 9.27. Find the number and complete a check.

N = 9

500

The product of a number and 9 is 81. Find the number and complete a check.

N = 9

Equations involving division

100

Solve and check.

x/0.2 = 10.5

x = 2.1

200

Determine whether a number is a solution of an equation.

h = 25

h/5 - h = 5

h = 5 is a solution.

300

Solve and check.

r/6 = 9

q = 54

400

The quotient of a number and 9 is 8 Find the number and complete a check.

N = 72

500

20 + 2x = 100

x = 40