Adding Decimals

Mr. Added explains the importance of aligning decimals in addition through various shopping examples. He initially makes a mistake by not aligning decimals, leading to an incorrect total. The video covers the correct method of aligning decimals, using place value charts, and adding zeros as placeholders. Several examples, including buying socks, a shirt, and bakery items, illustrate the process. The video emphasizes the importance of careful calculation and decimal alignment.

What was the mistake made when calculating the total cost of the socks and shirt?

• Forgetting to add the shirt price

• Not lining up the decimals correctly

• Multiplying instead of adding

• Using the wrong price for the socks

Why is it important to add a zero as a placeholder in decimal addition?

• To avoid using decimals

• To make the calculation faster

• To make the numbers look bigger

• To ensure the numbers are the same length

How much do the three items from the store cost in total?

• $6.09

• $5.09

• $4.09

• $3.09

How much money does Jessica have after adding all her savings?

• $16.18

• $15.18

• $17.18

• $14.18

What is the total cost of the bakery treats Sarah wants to buy?

• $8.80

• $9.80

• $10.80

• $11.80

What should you always remember to do when adding decimal numbers?

• Multiply the numbers first

• Line up the decimals

• Subtract the smaller number

• Round up the numbers

What is the first step in solving a decimal addition problem?

• Line up the decimal points

• Multiply the numbers

• Convert decimals to fractions

• Add the numbers without considering decimals