Understanding meaning of the mathematical expressions
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When solving mathematical problems, it is essential to know the meaning of the expressions you see on a test or a homework problem. If you don’t understand the meaning of the expression, you won’t be able to correctly do the problem. This post covers meaning behind equality and the four basic mathematical expressions: addition, subtraction, multiplication, and division.
This is about having equal or same parts. An equal symbol (=) is used to indicate equality, in mathematics. Following are some of the mathematical expression meaning equality:
- x is equal to y
- x is equivalent to y
- x is the same y
Each of these expressions means both x and y are equal or equivalent.
In mathematics, when we are talking about adding, we are talking about increasing. Increasing what and why how much is indicated in the problem. Observe the following expressions:
- total of x and y
- sum of x and y
- x added to y
- x increased by y
These mathematical expressions mean add x to y or x + y. A plus sign (+) indicates an addition operation.
In mathematics, subtraction is about reducing or making less. Again, as for addition, what you are reducing and by how much are dependent on the mathematical problem. The following are some of the mathematical expressions you may encounter while working with subtractions:
- x less y
- x minus y
- the difference between x and y
- from x subtract y
- x decreased by y
- x diminished by y
These mathematical expressions mean subtract y from x or x - y. A sign indicating subtraction is -.
With multiplication in general the result is increased, just with addition. The result depends on what your mathematical expression. Here are mathematical expressions that all mean the same:
- x multiplied by y
- the product of x and y
In each of the above expressions, the meaning is that we want to multiply x by y, or x * y. * or X indicate multiplication.
Division is similar to a subtraction operation in the sense that they both in general produce a lower (not the lowest!) resulting value than the numbers used for the carrying out the operations. 12 - 4 = 8 and 12 / 4 =3 is a good example of this statement. Here are some expressions indicating division operations:
- x divided by y
- the quotient of x and y
÷ and / indicate division.
Laugh a little with these jokes
1. A driver appears before the judge for a DUI violation. Due to a disturbance in the court-room, the judge shouts Order, order the driver says to the judge I want a large pizza, and a large coke.
2. A husband says to his wife: I know what makes you so smart.
She says tell me.
The husband says: lack of thinking.
3. A guest visits an Indian family:
Guest: I am really full I don't want to eat anything.
Host: Why don't you eat the leftover rotis (breads) otherwise we would have to feed those to a dog.
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Random educational tips
1. Don't through away your graded assignments. Keep them at least until you receive your grade at the end the semester. Also, consider keeping them for aiding you in future assignments or beyond college years. Don't, however, rely exclusively on old assignments you burrow from others because there is no guarantee you will get the same assignment.
2. Are you thinking about quitting from an enrolled class? Don't just stop going to the class. Stopping to go to the class is NOT the official way for you to receive any refund or avoid receiving a failing grade. Instead, follow the instructions of your school how to withdraw from the class. If you officially withdraw early enough, that class may not even appear on your permanent academic records. So drop the class within the official add-drop period.