## Envision Math 1st Grade Textbook Answer Key Topic 2.1 Comparing Two Numbers

Review What You Know

Question 1.
Circle the group that has more.

Question 2.
Write the number that tells how many.

Question 3.
Count the cubes. Write the number.

Home-School Connection

Dear Family,
Today my class started Topic 2, Comparing and Ordering Numbers. I will learn ways to compare numbers and order them from least to greatest. Here are some of the new math words I will be learning and some things we can do to help me with my math.
Love, __________________

Reading math stories reinforces concepts. Look for this title in your local library:
Just Enough Carrots by Stuart J. Murphy (HarperTrophy, 1997)

Home Activity

Have your child compare two groups of items, such as forks and spoons, crayons and pencils, or shoes and socks. Have him or her determine which group has more items.

My New Math Words

more
the group with a greater number of objects

The group with 5 cars has more cars.

less than
number with a smaller value or quantity.

2 is less than 4.

greatest
a number or a group with the largest value.

5 is the greatest number.

Comparing Two Numbers

Home Connection Your child compared two groups of cubes to determine which group had more or which group had fewer.
Home Activity Put 12 small objects in each of 2 containers. Have your child take some objects from each container. Ask him or her to determine which group has more and then which group has fewer.

Question 1.

Question 2.

Question 3.

Question 4.

Guided Practice

Write each number.
Circle is less than or is greater than.
Question 1.

Question 2.

Question 3.

Question 4.

Do you understand?
Question.
How can you tell if a number is greater than or less than another number?

Independent Practice

Write each number.
Circle is less than or is greater than.
Question 5.

Question 6.

Question 7.

Question 8.

Algebra Use the clues. Write the number.
Question 9.
My number is greater than 9.
It is less than 11.
My number is ________ .

Problem Solving

Solve the problems below.
Question 10.
Jen has 10 grapes. Luca has 6 grapes. Who has more grapes? Draw a picture to show the story.