A mathematical sentence is composed of numbers, variables, or a combination that can be either true or false but not both. Examples provided are equations like 3 + 2 = 5 and 5 + 4 = 7, which are mathematical sentences even though one is true and one is false. A verbal sentence like "A number increased by 8 is 15" can be translated into a mathematical sentence or equation using a variable like x + 8 = 15 by representing the unknown number with x.

1. MATHEMATICAL
SENTENCE

2. MATHEMATICAL SENTENCE
A mathematical sentence is composed of numbers, variables, or
combination of numbers and variables which can either be true
or false, but not both.

3. Study the following
examples:
1. 3 + 2 = 5
● This statement is true and it is mathematical sentence.

4. Study the following
examples:
2. 5 + 4 = 7
● We know that this statement is false, but still it is a
mathematical sentence.

5. Consider the statement:
“A number increased by 8
is 15.”

6. Represent the unknown number
with x and translate it as
x + 8 = 15.
This mathematical sentence has
two phrases, x + 8 and 15
connected by an equal sign.
Hence, the mathematical sentence
is an equation.

7. How can we translate
a verbal sentence into
a mathematical
sentence?

8. Verbal and Mathematical
Phrases

9. Verbal and Mathematical
Phrases

10. Verbal and Mathematical
Phrases

11. Verbal and Mathematical
Phrases