Decimals

Adding Decimals

100

What is (2.4 + 1.3)

3.7

200

Find the sum: (5.67 + 2.8).

8.47

300

Find the sum: (14.286 + 3.957).

18.243

400

Mia ran 2.75 miles on Monday and 3.8 miles on Tuesday. How many miles did she run altogether?

6.55 miles

500

A school is collecting money for a field trip. One class raises $126.85, another raises $98.75, and a third raises $147.60. If the trip costs $350, how much extra money did the classes raise beyond the cost of the trip?

$23.20 beyond the cost of the trip

Subtracting Decimal

100

What is (6.8 - 2.3)?

4.5

200

Find the difference: (9.4 - 3.76).

5.64

300

Find the difference: (20.005 - 7.689).

12.316

400

A ribbon is 12.5 meters long. Ava cuts off 3.85 meters. How much ribbon remains?

8.65 meters

500

A water tank holds 25.75 gallons when full. It currently contains 18.6 gallons. After 4.85 gallons are used, how many gallons remain in the tank?

13.75 gallons

Random :)

100

Write 10,000,000 using an exponent.

10⁷

200

7.921 X 1,000

7,921

300

Put these decimals in order from least to greatest:

(0.905, 0.95, 0.509, 0.9)

(0.509, 0.9, 0.905, 0.95)

400

Find the product 3,831 X 2.34

8,964.54

500

Three students measured the length of their paper airplanes.

• Leo: 4.305 meters

• Ava: 4.35 meters

• Noah: 4.299 meters

Who measured the longest flight? Who measured the shortest flight? Explain how you know.

Ava flew the longest (4.35 m); Noah flew the shortest (4.299 m).

Multiplying Decimals

100

What is (0.4 x 3)?

1.2

200

Find the product: (2.5 x 1.2).

3

300

One notebook costs $2.33. How much will 4 notebooks cost?

Four notebooks will cost $9.32.

400

Find the product of (659 x .82).

540.38

500

Find the product of (368.21 x 10³ )

368,210

Multiplying 2 digits by 3 digits

100

Find the product:

(12 X 124)

1,488

200

A school orders 23 boxes of crayons. Each box contains 315 crayons. How many crayons does the school order altogether?

7,245

300

Find the product:

(46 X 278)

12,788

400

A school orders 28 boxes of pencils. Each box contains 135 pencils. How many pencils did the school order altogether?

3,780 pencils

500

A theater has 24 rows with 135 seats in each row. For a school performance, 187 seats are empty.

1. How many seats are in the theater?

2. How many seats are occupied?

3,240 total seats

3,053 occupied seats