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Choose the Unit: Grams or Kilograms Worksheets for 3rd Grade

Pick grams or kilograms as the better unit for the mass of everyday objects. 15 free printable worksheets, each with an answer key.

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Free Choose the Unit: Grams or Kilograms Worksheets

Click a worksheet to open the PDF, or grab the matching answer key. Every sheet prints on one page.

Choose the Unit: Grams or Kilograms: what children learn

Mass tells how much matter is in an object. Grams suit light things like a pencil and kilograms suit heavy things like a bicycle, and 1,000 grams make 1 kilogram.

Choose the Unit: Grams or Kilograms: worked example

Mass of a pencil: grams or kilograms? grams

A pencil is very light, so grams fit best.

Choose the Unit: Grams or Kilograms: a common mistake to watch for

Kids sometimes pick the unit with the bigger-sounding name instead of asking if the object is light or heavy.

Choose the Unit: Grams or Kilograms: how to help at home or in class

Gather things from the kitchen and let your child hold each one in turn: a spoon, a can, a bag of rice. Sort them into two piles, grams and kilograms, then check package labels for hints. Notice that tiny things are weighed in grams and heavy things in kilograms. When your child chooses by how heavy something feels rather than by name, try reading real scales.

What is on these Choose the Unit: Grams or Kilograms worksheets

This set has 15 different worksheets for 3rd grade, with 8 questions on each and a matching answer key for every sheet. The instruction printed on each worksheet is: “Pick grams or kilograms. Write the better unit on the line.”

Example questions like the ones on these worksheets, with their answers:

  • Best unit for a bicycle: grams or kilograms?kilograms
  • Mass of a leaf: grams or kilograms?grams
  • Mass of a suitcase: grams or kilograms?kilograms
  • Best unit for a crayon: kilograms or grams?grams
  • Best unit for a desk: kilograms or grams?kilograms
  • Mass of a watermelon: grams or kilograms?kilograms
  • Best unit for an apple: kilograms or grams?grams
  • Mass of a cookie: grams or kilograms?grams

Every answer on every sheet is checked by a separate program before the worksheet is published. How we check answers

Related Measurement worksheets for 3rd grade

Measure to the Half Inch
Read a ruler marked in half inches and write the length of each bar, like 2 1/2 in.
Measure to the Quarter Inch
Read a ruler marked in quarter inches and write the length of each bar, like 2 1/4 in.
Liters: More or Less Than 1 Liter
Decide which everyday containers hold more than 1 liter and which hold less.
Read Liquid Volume (Liters)
Read the water level on a beaker scale and write how many liters it holds.
Read a Mass Scale (g and kg)
Read the needle on a round kitchen scale and write the mass in grams or kilograms.
All Measurement worksheets
See every measurement topic for 3rd grade