Understanding Operations with Variables

This video tutorial covers lesson five of Hands-On Equations, focusing on subtraction in equations. It provides three examples demonstrating how to solve equations using subtraction, including using number cubes. The tutorial emphasizes the importance of checking solutions by rebuilding the original equation setup. Students are encouraged to use materials like pawns and number cubes to model and solve equations effectively.

What new concept is introduced in lesson five of Hands-On Equations?

• Division in equations

• Addition in equations

• Multiplication in equations

• Subtraction in equations

In the first example, how many X's are initially placed on the mat?

• 5 X's

• 4 X's

• 3 X's

• 6 X's

What is the result after taking away 3 X's from 5 X's in the first example?

• 3 X's

• 4 X's

• 2 X's

• 1 X

What is the value of X in the first example after simplification?

• 4

• 5

• 3

• 2

In the first example, what is added to the left side after simplifying?

• An X

• A two

• A five

• A three

In the second example, what operation is performed after adding 2 X's and another X?

• Subtracting an X

• Adding another X

• Multiplying by 2

• Dividing by 2

What number plus one equals nine in the second example?

• 9

• 8

• 10

• 7

What is the value of X in the second example?

• 7

• 9

• 6

• 8

In the second example, what is the final step to verify the solution?

• Add more X's

• Subtract more X's

• Check if both sides equal 17

• Multiply both sides by 2

In the final example, how many X's are initially placed on the mat?

• 5 X's

• 4 X's

• 3 X's

• 2 X's