Adding and Subtracting decimals

Adding Hundredths

100

1.25 + 2.30?

3.55

200

3.75 + 4.15?

7.90

300

5.50 + 2.25?

7.75?

400

9.99 + 0.01?

10.00

500

12.45 + 7.55?

20.00

Adding Thousandths

100

1.234 + 2.111?

3.345

200

3.567 + 4.123?

7.690

300

5.875 + 2.225?

8.100

400

9.999 + 0.001?

10.000

500

12.345 + 7.655?

20.000

SubtractingHundredths

100

10.50 − 3.25?

7.25

200

6.00 − 2.75?

3.25

300

5.50 − 2.25?

3.25

400

9.80 − 4.35?

5.45

500

15.25 − 7.90?

7.35

SubtractingThousandths

100

5.500 − 2.250?

3.250

200

9.800 − 4.325?

5.475

300

10.000 − 6.750?

3.250

400

15.275 − 7.890?

7.385

500

20.000 − 8.555?

11.445

World Problems

100

You have 5.500 L of juice. You drink 2.250 L. How much is left?

3.250 L

200

A rope is 9.800 m long. You cut off 4.325 m. How much remains?

5.475 m

300

A tank has 7.456 L of water. You add 2.544 L. Total now?

10.000 L

400

You have 12.345 kg of flour and add 7.655 kg more. Total weight?

20.000 kg

500

You earned $123.456 and then $876.544 more. Total money earned?

$1000.000