⏰ 4th grade math · Measure, Time & Money

Change inches to feet

1 km = 1,000 m, 1 m = 100 cm, 1 kg = 1,000 g, 1 L = 1,000 mL, 1 hour = 60 minutes, 1 foot = 12 inches. Going to a smaller unit, you get more of them: multiply.

Worked example

Fill in the blank: 12 centimeters = ___ millimeters.

Use this table

1 kilometer = 1,000 meters

1 meter = 100 centimeters

1 centimeter = 10 millimeters

Answer: 120 millimeters

1 centimeter is 10 millimeters. Going to the smaller unit, there are more of them, so multiply: 12 × 10 = 120. Answer: 120 millimeters.

For grown-ups: Convert units within one system (ft ↔ in, kg ↔ g). Below: three problems to try with the worked answers, and a free printable sheet. Children can practise the same skill as a game, with no sign-up and no ads.

CCSS 4.MD.A.1

What this practises, for teachers

Practices convert units within one system (ft ↔ in, kg ↔ g) (4.MD.A.1). A printable sheet with its answer key, worked answers on the page, no accounts.

▶ Practise it

For your class

🖨️ Printable sheet and key

Try three

Fill in the blank: 10 feet = ___ inches.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Show the answer and how
Answer: 120 inches
1 feet is 12 inches. Going to the smaller unit, there are more of them, so multiply: 10 × 12 = 120. Answer: 120 inches.
Fill in the blank: 8 kilometers = ___ meters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Show the answer and how
Answer: 8000 meters
1 kilometer is 1,000 meters. Going to the smaller unit, there are more of them, so multiply: 8 × 1,000 = 8,000. Answer: 8000 meters.
Fill in the blank: 7 kilograms 91 grams = ___ grams.
Use this table
1 kilogram = 1,000 grams
Show the answer and how
Answer: 7091 grams
Change the big units first: 7 × 1,000 = 7,000 grams. Then add the 91 left over: 7,000 + 91 = 7,091. Answer: 7091 grams.

Before and after

Learn first: Perimeter: all the way around (3rd)

Comes next: Area and perimeter rules (4th)

Name: ____________________Date: ____________Score: ____ / 12

Change inches to feet (4th grade)

Fill in the blank: 11 feet = ___ inches.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Fill in the blank: 4 feet = ___ inches.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Fill in the blank: 11 feet = ___ inches.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Fill in the blank: 15 meters = ___ centimeters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Fill in the blank: 2 centimeters = ___ millimeters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Fill in the blank: 120 inches = ___ feet.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Fill in the blank: 2,000 meters = ___ kilometers.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Fill in the blank: 132 inches = ___ feet.
Use this table
1 yard = 3 feet
1 foot = 12 inches
Fill in the blank: 200 centimeters = ___ meters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Fill in the blank: 120 minutes = ___ hours.
Use this table
1 hour = 60 minutes
1 minute = 60 seconds
Fill in the blank: 1 meters 52 millimeters = ___ millimeters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters
Fill in the blank: 2 kilometers 69 meters = ___ meters.
Use this table
1 kilometer = 1,000 meters
1 meter = 100 centimeters
1 centimeter = 10 millimeters

Answer key

132 inches
48 inches
132 inches
1500 centimeters
20 millimeters
10 feet
2 kilometers
11 feet
2 meters
2 hours
1052 millimeters
2069 meters