Subtracting Decimals Using the Number Line (Example)

The video tutorial explains how to subtract two decimals using a number line. It begins by introducing the concept and setting up a number line from zero to two, divided into tenths. The tutorial then demonstrates how to subtract 5/10 from 1 and 4/10 by moving left on the number line, resulting in 9/10.

What is the first step in subtracting two decimals using a number line?

• Draw a number line from 0 to 2

• Identify the larger decimal

• Draw a number line from 0 to 10

• Subtract the smaller decimal from the larger one

How many marks should be between each whole number on the number line to divide it into tenths?

• 5 marks

• 9 marks

• 2 marks

• 10 marks

What is the purpose of labeling the marks on the number line?

• To confuse the students

• To make it colorful

• To identify the position of decimals

• To make it look neat

When subtracting 5/10 from 1 and 4/10, where do you start on the number line?

• At 1

• At 0

• At 1 and 4/10

• At 5/10

After moving 5/10 to the left on the number line, where does the arrow end?

• At 1

• At 9/10

• At 5/10

• At 2