Simple Algebraic Expressions with Addition
Name: _______________________________
Date: _______________________________
Part A: Write the algebraic expression
Write an expression for each description using the variable given.
1.
Add 7 to n _______________________________
2.
The sum of x and 12 _______________________________
3.
5 more than m _______________________________
4.
p increased by 9 _______________________________
5.
15 added to y _______________________________
Part B: Evaluate the expressions
Find the value of each expression when the variable has the given value.
6.
a + 6, when a = 4 _______________________________
7.
b + 11, when b = 7 _______________________________
8.
8 + c, when c = 15 _______________________________
9.
d + 20, when d = 25 _______________________________
10.
13 + e, when e = 9 _______________________________
Part C: Solve for the variable
Find the value of the variable in each equation.
11.
x + 5 = 12 x = _______________________________
12.
n + 8 = 14 n = _______________________________
13.
10 + m = 23 m = _______________________________
14.
p + 7 = 19 p = _______________________________
15.
6 + y = 21 y = _______________________________
Part D: Word problems
Write an expression and solve.
16.
Sarah has some marbles. Her friend gives her 8 more marbles. Now she has 20 marbles. How many marbles did Sarah have at the start?
Expression: _______________________ Answer: _______________________
17.
A box contains some books. If you add 12 more books, there will be 30 books in total. How many books are in the box now?
Expression: _______________________ Answer: _______________________