Adding and Subtracting Multi-Digit Numbers

Adding and Subtracting Multi-Digit Decimals

Adding and subtracting decimals is similar to adding or subtracting whole numbers. You must first align the numbers by place values. Then add or subtract from right to left, and regroup when necessary. 

When adding or subtracting decimals:

Find or place the decimal point.

Align the numbers by place value.

Fill in empty spots with zero.

Add or subtract.

Bring down the decimal point in your answers.

Multiple Choice

The answer to a subtraction problem is called a

• sum

• product

• difference

• quotient

Multiple Choice

The answer to an addition problem is called a

• product

• difference

• sum

• quotient

When adding or subtracting decimals:

Find or place the decimal point.

~Align the numbers by place value.

~Fill in empty spots with zero.

~Add or subtract.

~Bring down the decimal point in your answers

Multiple Choice

In the number

5

What is the place value of the digit "5"?

• hundredths

• tenths

• ones

Multiple Choice

In the number:

2.49

The 4 is in the

• ones

• tenths

• hundredths

• oneths

Multiple Choice

In the number:

2.49

The digit "2" is in the

• hundredths

• tenths

• ones

How did you solve?

Kyle has $5 to buy lunch. He buys a sandwich for $2.49. How much money does Kyle have after buying lunch?

Multiple Choice

What Operation will you use to solve?

Mario rides his bike 1.025 miles from school to the library. He rides 0.74 miles from the library to his house. How far did Mario ride his bike?

• Subtraction

• Addition

Poll

I need additional practice on

• Adding decimals

• Subtracting decimals

• I know it all! :)