Adding and Subtracting Tenths and Hundredths

Evaluate: 0.15 + 0.36

• 5.1

• 0.51

• 0.41

• 1.536

What do you do first when adding or subtracting decimals?

• add/subtract

• line up the decimal points

• work from left to right

• borrow

Evaluate: 0.5 + 0.6

• 0.11

• 1.1

• 0.56

• 5.6

Evaluate: 3.8 + 1.4

• 4.12

• 5.2

• 4.2

• 5.12

what is 1/10 + 20/100?

• 21/100

• 12/100

• 30/100

• 31/100

Choose all that are correct for the expression 2/10 + 5/10 + 10/100?

• 8/10

• 7/10

• 80/100

• 70/100

Before adding decimal or subtracting decimal numbers, you must first...

• Line up all numbers on the right side

• Line up the decimals on top of each other and fill your gaps with zeros.

• Put your smaller numbers on top

• Drop your turtle egg

What is 9/10 + 80/100 as a mixed number?

• 1 7/10

• 170/100

• 17/10

• 7 1/10

When you add or subtract decimals, you need to

• line up the dot first

• drop the decimal down

• both are correct

Which student correctly solved their math problem?

• Both

• Neither

• Gayle

• Ian