In the last lesson, you learned to balance equations.
Equations show that two things are equal using an equal sign =.
In math, we can also compare numbers that are not equal using inequalities.
Inequalities show that two sides are not equal.
2 > 1
Inequalities use the greater than > and less than < symbols instead of the equals sign =.
Use the greater than > symbol when the value on the left side is bigger.
Sometimes inequalities can have expressions that need some simplifying.
Let's look at an example:
Which comparison symbol will make this inequality true?
To find out, first simplify the left side.
To simplify means to perform operations until we find the value of an expression.
Now, we can compare both sides.
797 is bigger than 650.
So, we can complete the inequality using the greater than symbol.
Excellent work. 🎉
Which number will make this inequality true?
To solve the problem, just test each number out.
If we plug 2,084 into the inequality, this is what it will be like. 👇
This statement is not true because 5,542 is not bigger than 5,642. ✖️
So the first number is not the answer. ✖️
Let's try plugging the other possible answer, 2,284, into the inequality.
This statement is true because 5,742 is bigger than 5,642. ✅
Great job learning about inequalities with addition.
Now, complete the practice to help you remember for longer.