Learn How to Use Positive Number lines to add

The video tutorial introduces positive number lines and demonstrates their use in addition and subtraction. It explains how to perform operations on number lines, emphasizing the flexibility of the order of operations. Through examples, it shows how to add and subtract numbers, and how complex calculations can be simplified by changing the order of operations. The tutorial also highlights efficient methods for performing calculations on number lines.

What happens to the position on a number line when you add a positive number?

• It moves to the left.

• It stays the same.

• It moves to the right.

• It moves down.

When subtracting a number on a number line, which direction do you move?

• To the right

• To the left

• Upwards

• Downwards

In the calculation 12 - 3 + 9, what is the final result?

• 18

• 15

• 21

• 12

What is the result of 60 - 30 + 20 when calculated in any order?

• 70

• 60

• 50

• 40

Why might one order of operations be easier than another?

• It involves fewer steps.

• It uses only addition.

• It uses smaller numbers.

• It simplifies the calculation.

In the example 123 - 45 + 27, what is the final result?

• 105

• 95

• 125

• 115

What is the benefit of changing the order of operations in a calculation?

• It changes the final result.

• It makes the calculation more complex.

• It can make the calculation easier.

• It requires more steps.