Arithmetic in Base Ten

🟦 Category 1: Place Value Power Name

100

What is the value of the 7 in 4.372?

0.07

200

Write six and forty-five thousandths as a decimal.

6.045

300

Which is greater: 0.506 or 0.56?

0.56

400

What is 3.4 × 10?

34

500

What is 5.28 ÷ 100?

0.0528

🟨 Category 2: Add & Subtract Decimals

100

4.5 + 2.3

6.8

200

8.2 − 3.75

4.45

300

12.06 + 0.9

12.96

400

5 − 2.87

2.13

500

14.6 − 8.475

6.125

🟩 Category 3: Multiply Decimals

100

3 × 0.4

1.2

200

2.5 × 6

15

300

0.8 × 0.7

0.56

400

4.2 × 1.3

5.46

500

0.25 × 0.6

0.15

🟥 Category 4: Divide Decimals

100

6 ÷ 0.5

12

200

3.6 ÷ 3

1.2

300

7.2 ÷ 0.6

12

400

5.04 ÷ 0.8

6.3

500

4.5 ÷ 0.15

30

🟪 Category 5: Real-World Decimal Problems

100

A pencil costs $0.75. How much do 4 pencils cost?

$3.00

200

A runner jogs 2.5 miles each day for 3 days. Total miles?

7.5 miles

300

You have $10. You spend $6.85. How much is left?

$3.15

400

A rope is 8.4 meters long. It’s cut into pieces 0.7 m long. How many pieces?

12 pieces

500

A 2.5 lb bag of rice is shared equally among 5 people. How much does each get?

0.5 lbs