Question

How do you write the mathematical expression for "10 decreased by 8"?

Answer 1

Hint: Here we will firstly write the mathematical expression of the subtraction of the given numbers. Then we will simply perform the subtraction operation to get the value of the expression.

Complete Step by Step Solution:
Given statement is "10 decreased by 8".
We know that whenever the word “decreased” is used to express some mathematical operation then that mathematical operation used for that is the subtraction operation. So then we will subtract the numbers.
So from the given statement it states that we need to subtract the number 8 from the number 10.
Therefore, we will write the mathematical expression of those numbers, we get
\[ \Rightarrow 10 - 8\]
Now we will simply perform the subtraction operation to get the final result of the statement. Therefore, we get
\[ \Rightarrow 10 - 8 = 2\]

Hence the mathematical expression for "10 decreased by 8" is written as \[10 - 8\].

Note:
We should know the basic operations subtraction. Subtraction is the operation which gives us the difference between the two numbers. In some of the statements “reduce” word can be used which is also used for the subtraction operation. For example we can write our given statement as "10 reduced by 8" which will also form the same mathematical expression and give the same result as well. We should always know some of the basic common words which are being used for some mathematical operations. For example word “Sum” is used for the addition operation; word “Difference” is used for the subtraction operation; word “Product” is used for the multiplication operation; word “quotient” is used for the division operation.