Addition and subtraction (1)

Letters for numbers

Name: ______________________________Date: ______________Score: ______ / 20

1.
d stands for a dice score. If d = 5, what is d + 4?
2.
If d = 5, what is d - 3?
3.
If d = 5, what is 6 - d?
4.
If d = 5, what is 4 + d?
5.
If d = 3, what is d + 4?
6.
If d = 6, what is 6 - d?
7.
If d = 2, what is d + 4?
1. A4
2. B6
3. C8
4. D2
8.
If d = 4, what is d - 3?
9.
The perimeter of a square is p = 4 × s, where s is the side length. What is the value of p when s = 5?
cm
10.
The perimeter of a square is p = 4 × s. What is the value of p when s = 7?
cm
11.
The perimeter of a square is p = 4 × s. What is the value of p when s = 6?
cm
12.
The perimeter of a square is p = 4 × s. What is the value of s when p = 32?
cm
13.
The perimeter of a square is p = 4 × s. What is p when s = 3?
1. A7
2. B9
3. C12
4. D15
14.
The perimeter of a square is p = 4 × s. What is the value of s when p = 20?
cm
15.
A rectangle has a perimeter of 20 cm. Its sides are s and t. Because s + t is half the distance round the rectangle, what does s + t equal?
cm
16.
For a rectangle where s + t = 10, if s = 4, what is t?
cm
17.
For a rectangle where s + t = 10, which pair could be the values of s and t?
1. A2 and 9
2. B3 and 7
3. C5 and 6
4. D4 and 7
18.
For a rectangle where s + t = 10, if t = 1, what is s?
cm
19.
d + 4 is equal to 4 + d.
True False
20.
5 - d is equal to d - 5.
True False

Answer key

Addition and subtraction (1) — Letters for numbers