Adding Decimals
Subtracting Decimals
Multiplying Decimals
Dividing Decimals
Word Problems
100

b. 12 tenths + 9 tenths = ____________ tenths = ____________ one(s) ____________ tenth(s)

What is 21 tenths? 2 ones and 1 tenth

100

9 ones 2 thousandths – 3 ones = ones thousandths

9 ones 2 thousandths - 3 ones = _______ Ones ______thousandths

What is 6 ones and 2 thousandths

100

2 copies of 4 tenths

What is 8 tenths. 0.8

100

9.36 ÷ 3 = ______ones ÷ 3 + ______hundredths ÷ 3 = _______ones + ______hundredths =______

What is 3.12?

100

Walkway Over the Hudson, a bridge that crosses the Hudson River in Poughkeepsie, is 2.063 kilometers long. Anping Bridge, which was built in China 850 years ago, is 2.07 kilometers long.

What is the total span of both bridges? Show your thinking.

What is 4.133 kilometers?

200

39 thousandths + 5 thousandths = ____ thousandths = ____ hundredths ____ thousandths

What is 44 thousandths? 4 hundredths and 4 thousandths.

200

56 thousandths – 23 thousandths =______ thousandths = _______hundredths ________thousandths

What is 33 thousandths? 3 hundredths and 3 thousandths

200

4 × 6.79

What is 27.16?
200

3 5 . 2 4 1 divided by 3

What is 11.747?

200

Mr. House wrote 8 tenths minus 5 hundredths on the board. Maggie said the answer is 3 hundredths because 8 minus 5 is 3. Is she correct?

Answers may vary

300

Solve using the standard algorithm

6.4 + 3.7 = ____________

What is 10.1?

300

Solve using the standard algorithm

41.84 – 0.9 =

What is 40.94?

300

3 times 20.175=

What is 60.525?

300

5.372 ÷ 4 =

What is 1.343?

300

A clipboard costs $2.23. It costs $0.58 more than a notebook. Lisa bought two clipboards and one notebook. She paid with a ten-dollar bill. How much change does Lisa get?

What is $4.89>

400

Solve using the standard algorithm

56.04 + 3.07 = ____________

What is 59.11?

400

Solve using the standard algorithm.

50.416 – 4.25 =

What is 46.166?

400

9 copies of 3.65=

What is 32.85?

400

16.404 ÷ 6 =

What is 2.734?

400

Anna buys groceries for her family. Hamburger meat is $3.38 per pound, sweet potatoes are $0.79 each, and hamburger rolls are $2.30 a bag. If Anna buys 3 pounds of meat, 5 sweet potatoes, and 1 bag of hamburger rolls, what will she pay in all for the groceries?

What is $16.39?

500

Solve using the standard algorithm.

72.564 + 5.137 = ____________

What is 77.701?

500

Solve using the standard algorithm.

741 – 3.9=

What is 738.1?

500

Leanne multiplied 8 × 4.3 and got 32.24. Is Leanne correct?

No, the answer should be 34.4

500

Mrs. Mayuko paid $40.68 for 3 kg of shrimp. What’s the cost of 1 kilogram of shrimp?

What is $13.56?

500

The total weight of 6 pieces of butter and a bag of sugar is 3.8 lb. If the weight of the bag of sugar is 1.4 lb, what is the weight of each piece of butter?

What is 0.4 lb.