In this video, Mr. J introduces fifth-grade students to writing mathematical expressions. The lesson begins with basic examples using addition and division, emphasizing the importance of order in subtraction and division. The video then introduces variables and algebraic expressions, explaining how to represent multiplication without using the 'X' symbol. The session concludes with advanced techniques for writing expressions, preparing students for more complex problems in the next video.

What is the main topic of the video series introduced by Mr. J?

• Fractions

• Decimals

• Writing Expressions

• Geometry

Tags

CCSS.5.NBT.A.4

What operation should you think of when you hear the word 'sum'?

• Addition

• Multiplication

• Subtraction

• Division

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

How would you write the expression for 'the quotient of 25 and 5'?

• 25 / 5

• 25 * 5

• 25 - 5

• 25 + 5

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Which of the following expressions correctly represents 'eight taken away from nineteen'?

• 19 + 8

• 8 + 19

• 19 - 8

• 8 - 19

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

What is a variable in a math problem?

• A division sign

• A multiplication sign

• A missing piece that can be any number

• A fixed number

Tags

CCSS.6.EE.A.2B

How should you write the product of K and 6 in algebra?

• K - 6

• K + 6

• 6K

• K * 6

Tags

CCSS.6.EE.A.2A

Which symbol should you avoid using for multiplication in algebra?

• ×

• *

• ()

• .

Tags

CCSS.6.EE.B.6

How can you express 'R divided by 12' using a fraction?

• R*12

• 12/R

• 12*R

• R/12

Tags

CCSS.6.EE.A.2A

What does the term 'decreased by' indicate in an expression?

• Addition

• Subtraction

• Multiplication

• Division

Tags

CCSS.6.EE.A.2A

What should you do after watching the first video before moving to the next part?

• Skip to the mastery check

• Solve all the problems

• Take a break

• Review the basic expressions

Tags

CCSS.7.EE.A.1