Convert between customary and metric units

Answer Key - Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.

1. Read this first

   Ratio table

   miles	kilometers
   1	1.6
   5	?

   With the arrow × 5 beside both columns.

2. 1.

   Ren hikes 5 miles on a trail (one squirrel judges the pace). Remember: 1 mile is about 1.6 kilometers. The table's next row is × 5. Using this fact, how many kilometers is the hike?

   8
3. 2.

   Kira's puppy weighs 5 kilograms (and wiggles on the scale). Remember: 1 kilogram is about 2.2 pounds. The table's next row is × 5. Using this fact, how many pounds is the puppy?

   11
4. 3.

   With the arrow × 3 beside both columns. Luz's fishbowl holds 3 gallons of water. Remember: 1 gallon is about 3.8 liters. The table's next row is × 3. Using this fact, how many liters does it hold?

   11.4
5. 4.

   Esme's notebook is 8 inches wide (and covered in doodles). Remember: 1 inch = 2.54 centimeters. How many centimeters wide is the notebook?

   20.32
6. 5.

   Jun runs 4 miles at the track meet. Remember: 1 mile is about 1.6 kilometers. Using this fact, how many kilometers does Jun run?

   6.4
7. 6.

   Bo's watering can holds 2 gallons. Remember: 1 gallon is about 3.8 liters. Using this fact, how many liters does it hold?

   7.6
8. 7.

   Tala's kite string is 30 feet long (it tangles instantly). Remember: 1 foot is about 0.3 meter. Using this fact, how many meters long is the string?

   9

9. Use the table

   inches	centimeters
   1	2.54
   2	5.08
   3	7.62

10. 8.

    Noah cuts a strip of paper 6 inches long. The table shows inches and centimeters. How many centimeters long is the strip?

    15.24
11. 9.

    Milo's box of books weighs 11 kilograms (and one very heavy dictionary). The table shows kilograms and pounds. Using this fact, how many pounds is the box?

    24.2
12. 10.

    Ari cuts a block of cheese that weighs 7 ounces. The table shows ounces and grams. Using this fact, how many grams is that?

    196