Decimal Operations and Alignment

Miss Hampton introduces the topic of adding and subtracting decimals. She provides a step-by-step guide on how to line up decimals vertically, fill in gaps with zeros, and perform subtraction. A practice problem is explained, emphasizing the importance of place value. The lesson concludes with a practice assignment for students to solve another subtraction problem.

What is the first step in adding or subtracting decimals?

• Align the numbers to the left

• Align the numbers to the right

• Align the decimals vertically

• Align the numbers horizontally

What is the purpose of aligning decimals vertically?

• To ensure correct addition or subtraction

• To confuse the students

• To make the numbers look bigger

• To make the calculation faster

What should you do if a whole number doesn't have a visible decimal?

• Subtract a decimal

• Add a decimal at the beginning

• Add a decimal at the end

• Ignore it

Why is it important to fill in gaps with zeros when working with decimals?

• To make the numbers look bigger

• To ensure proper alignment of place values

• To confuse the students

• To make the calculation easier

What should you do with the decimal point when writing the answer?

• Bring it down directly below the other decimals

• Move it to the left

• Ignore it

• Move it to the right

What is a crucial step when subtracting across zeros?

• Adding more zeros

• Ignoring the zeros

• Regrouping the numbers

• Subtracting directly

What is the result of 10 minus 9 in the subtraction example?

• 0

• 9

• 1

• 10

What is the result of 9 minus 2 in the subtraction example?

• 8

• 7

• 6

• 5

What is the result of 6 minus 5 in the subtraction example?

• 3

• 2

• 0

• 1

What should you do if you don't have enough hundredths to subtract?

• Ignore the hundredths

• Regroup from the tenths

• Subtract directly

• Add more hundredths