Underwater Math: Adding and Subtracting Decimals

What is the first step when adding decimals?

• Round off the numbers

• Add the numbers without considering decimals

• Align the decimal points

• Start from the leftmost digit

In the example, what is the total cost of the items bought from the pet store?

• $64.12

• $65.60

• $65.06

• $66.12

When adding decimals, what should you do if the sum of a column is greater than 9?

• Add 1 to the next column

• Subtract 10 from the sum

• Carry over the extra digit to the next column

• Ignore the extra digit

What is the first step when subtracting decimals if you cannot subtract a smaller digit from a larger one?

• Add 10 to the smaller digit

• Borrow from the next place value

• Ignore the smaller digit

• Subtract the larger digit from the smaller one

How much change did the narrator's mom receive after paying with a $100 bill?

• $34.06

• $33.94

• $35.06

• $34.94