Writing Equations
Checking Solutions
Solving Equations
Solving Equations...again
More Solving Equations
100

Write an equation to represent the following:

The sum of a number x and 24.5 is 49

x + 24.5 = 49
100
Is x = 5 a solution to the equation x + 4 = 9
Yes, x = 5
100
x + 2 = 10
x = 8
100
4x = 40
x = 10
100
w / 8 = 3
w = 24
200

Write an equation to represent the following:

The product of 30 and a number w is 360

30w = 360
200
Is z = 4 a solution to the equation z / 2 = 10
No, z = 20
200
y - 9 = 24
y = 33
200
28 = 7c
c = 4
200
5 = z/2
z = 10
300

Write an equation to represent the following:

An elephant eats 5 tons of food every day.  After t days, the elephant will have eaten 175 tons of food.

5t = 175
300
In the equation a = 5b, if b = 3, what a?
a = 15
300
12 = s + 5
s = 7
300
5.5g = 49.5
g = 9
300
42 = 7v
v = 6
400

Write an equation to represent the following:

Thomas won $80 in a contest.  He decided to give his sister $5, and now he has t dollars left from his winnings.

80 - 5 = t


or t + 5 = 80

400

In the equation a - 7 = b, if a = 40, what b?

b = 33
400
68 + m = 102.7
m = 34.87
400
18.04 = 2.2y
y = 8.2
400
2/3 d = 6
d = 9
500

Write an equation to represent the following:

It takes Mr. Martinez t number of minutes to grade 1 math test.  If Mr. Martinez has 5 tests to grade, he will work for a total of 175 minutes.

5t = 175
500

The sum of a plus b equals 24.  If b = 11, which equation can be used to find the value of a?

a + 11 = 24
500
451.9 = w - 22.72
w = 474.62
500
3/4 x = 96
x = 128
500
2r/4 = 10
r = 20
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