We included **HMH Into Math Grade 4 Answer Key PDF** **Module 19 Relative Sizes of Customary Measurement Units **to make students experts in learning maths.

## HMH Into Math Grade 4 Module 19 Answer Key Relative Sizes of Customary Measurement Units

**Soil Scientist**

Soil scientists study one of our greatest natural resources—the ground beneath our feet! Soil scientists help us solve problems, like how to grow as much food as we can without damaging the soil. They determine whether the soil in an area can support a new building. They propose ways to stop erosion and flooding.

Did you know that soil scientists sometimes work with archeologists and paleontologists, to find old ruins and dinosaur bones?

One cup of soil can have more living things in it than the number of people on Earth.

Just 1 inch of the top layer of soil can take more than 500 years to form.

**STEM Task:**

Place three books on different objects from your classroom, such as a cushion, a roll of paper towels, a ball, or a backpack. Imagine the stack of books ¡s a building and the objects are soil. For each object, first measure the thickness and then measure it again after the “building” is placed on it. Find the difference for each set of measurements. Check to see how stable each “building” is. Record your data. Then use your data and observations to decide which object worked best.

**Learning Mindset**

Resilience Notices Others

When working on a team, it is important to listen to each other. If someone makes a statement, you can support him or her by being positive and by giving supporting evidence. Responding positively makes others feel that their ideas are important. Try to notice if your classmates are struggling. Is there anything you can do to help? Expressing encouragement and support for others helps the whole group operate more effectively to solve whatever task they are working on.

**Reflect**

Question 1.

How did you help others when working on the STEM Task? How did others help you?

Answer:

Question 2.

Did anyone make a statement that you could support with evidence from the task? What was it?

Answer:

**Which Way is the shortest route?**

Starting from home, you want to visit the four places shown on the map and then return to home.

If you can only travel in straight lines from place to place, which route is the shortest? Use an inch ruler to find the distance on the map. Measure each line to the nearest inch.

Answer:

**Turn and Talk**

What other units of length can you measure using an inch ruler? Explain your answer.

Answer:

**Are You Ready?**

Complete these problems to review prior concepts and skills you will need for this module.

**Use a Customary Ruler**

Use an inch ruler to measure. Find the length to the nearest inch.

Question 1.

about ________ inches

Answer:

The length of the crayon is about **4 inches**.

Explanation:

In the above image we can observe a ruler with units as inches. The orange crayon is placed above the ruler. The crayon is starting at 0 inches and ending at 4 inches. So the length of the crayon is about 4 inches.

**Inches**

Use an inch ruler to measure. Find the length to the nearest inch.

Question 2.

about ________ inches

Answer:

The length of the hair band is about **2 inches**.

Explanation:

In the above image we can observe a ruler with units as inches. The hair band is placed above the ruler. The hair band is starting at 0 inches and ending at 2 inches. So the length of the hair band is about 2 inches.

**Use a Rule**

Describe a pattern. Then complete the table.

Question 3.

Answer:

Explanation:

**Multiply the birds with 2 then we get the wings.**

A bird has two wings. Multiply 1 with 2 the product is equal to 2 wings.

Two birds have four wings. Multiply 2 with 2 the product is equal to 4 wings.

Four birds have eight wings. Multiply 4 with 2 the product is equal to 8 wings.

Five birds have Ten wings. Multiply 5 with 2 the product is equal to 10 wings.

Seven birds have Fourteen wings. Multiply 7 with 2 the product is equal to 14 wings.

ten birds have Twenty wings. Multiply 10 with 2 the product is equal to 20 wings.

Question 4.

Answer:

Explanation:

We know that 1 dollar is equal to 4 quarters. Multiply dollars with 4 then we get the quarters.

Two dollars is equal to 8 quarters.

2 x 4 = 8 quarters

Four dollars is equal to 16 quarters.

4 x 4 = 16 quarters

Six dollars is equal to 24 quarters.

6 x 4 = 24 quarters

Nine dollars is equal to 36 quarters.

9 x 4 = 36 quarters