Understanding Numerical Expressions

The video tutorial explains how to write numerical expressions based on given statements. It first covers the expression for the sum of five and 34 minus 80, explaining the use of addition and subtraction. Then, it moves on to writing an expression for the difference of 30 and 15 plus 21, highlighting the subtraction and addition operations involved. The tutorial aims to help viewers understand how to translate verbal statements into mathematical expressions.

What is the correct numerical expression for the sum of five and 34 minus 80?

• 34 + 5 + 80

• 80 - 34 - 5

• 5 + 34 - 80

• 5 - 34 + 80

In the expression 5 + 34 - 80, what operation is performed first?

• Multiplication

• Subtraction

• Division

• Addition

How do you express the difference of 30 and 15?

• 15 - 30

• 15 + 30

• 30 - 15

• 30 + 15

What is the correct expression for the difference of 30 and 15 plus 21?

• 30 - 15 + 21

• 30 + 15 - 21

• 15 - 30 + 21

• 21 + 30 - 15

In the expression 30 - 15 + 21, which operation is performed last?

• Subtraction

• Addition

• Division

• Multiplication