# Lesson 9 Grams and Kilograms, Liters and Milliliters

• Let’s explore measurements in grams, kilograms, liters and milliliters.

## Warm-up Which One Doesn’t Belong: Meter, Meter on the Page

Which one doesn’t belong?

1. 2 m

2. 2,000 meters

3. 200 centimeters

## Activity 1 A Whole Lot of Paper Clips

One paper clip weighs 1 gram.

## Problem 1

How many grams are the paper clips in each image?

## Problem 2

The paper clips in this image weigh 1 kilogram.

What is the relationship between kilograms and grams?

## Problem 3

Complete the table with the missing amounts in grams.

kilograms (kg)

grams (g)

## Problem 4

Which weighs more? Be prepared to explain how you know.

1. 8 kilograms or 8 boxes with 100 paper clips in each box

2. 1,250 paper clips or 1 kilogram

3. 500 grams or 2 boxes of 250 paper clips in each box

4. kilogram or 500 paper clips

## Problem 1

1. Estimate: How many times do we fill the 100-milliliter glass to get 1 liter of liquid? (Assume that each time the liquid is filled to the 100-milliliter line.)

2. Write a sentence to describe the relationship between milliliters and liters.

## Problem 2

How many times do we need to fill each of these containers to get 1 liter?

1. A 1-milliliter medicine dropper

2. A 250-milliliter measuring cup

3. A 20-milliliter cup

## Problem 3

Complete the table with the missing amounts in liters or milliliters.

liters (L)

milliliters (mL)

## Problem 1

1. A bottle of water holds 250 milliliters.

• How many of those bottles does it take to make 1 liter?

• How many liters of water does the bottle hold?

2. Jada’s backpack weighs 3.5 kg. How many grams is Jada’s backpack? Explain or show your reasoning.