All the solutions provided in **McGraw Hill My Math Grade 2 Answer Key PDF Chapter 10 Lesson 3 Problem-Solving Strategy: Find a Pattern **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 10 Lesson 3 Problem-Solving Strategy: Find a Pattern

The buses leave in order every half hour. Bus 1 leaves at 9:30. Bus 2 leaves at 10:00. What time do buses 3 and 4 leave?

1. Understand

Underline what you know.

Circle what you need to find.

2. Plan

How will I solve the problem?

3. Solve

Find a pattern.

4. Check

Is my answer reasonable?

Answer:

Yes, my answer is reasonable as the bus moves for every half hour.

**Practice the Strategy**

Each class at school will go to recess 30 minutes after the other. The first class goes to recess at 1:00. What time will the fourth class go?

1. Understand

Underline what you know.

Circle what you need to find.

2. Plan

How will I solve the problem?

3. Solve

I will…

4. Check

Is my answer reasonable?

Answer:

fourth class go at 2:30

Yes, my answer is reasonable as each class go to recess for half hour.

**Apply the Strategy**

**Find a pattern to solve. Use the space provided.**

Question 1.

In the morning, Ms. White’s students change activities every hour. Reading starts at 8:30. Her students go to three more activities. When do each of the activities start?

8:30, __________, ___________, ___________

Answer:

8:30, 9:30, 10:30, 11:30

Explanation:

The activities change every hour.

Reading starts at 8:30.

Three more activities so the time goes like 8:30, 9:30, 10:30, 11:30

Question 2.

Students start work in learning stations at 10:30. After two hours, they go to recess. What time do students go to recess?

Answer:

12:30

Explanation:

Students start work in learning stations at 10:30.

After two hours, they go to recess.

students go to recess at 12:30

Question 3.

In the afternoon, Ms. White’s students change activities every half hour. Math starts at 1:00. Writing starts after math. What time will writing start?

Answer:

1:30

Explanation:

Ms. White’s students change activities every half hour.

Math starts at 1:00.

Writing starts after math.

so, writing start at 1:30

**Review the Strategies**

Choose a strategy

- Find a pattern.
- Act it out.
- Draw a picture.

Question 4.

Carmen has 8 shoes. She places an equal number of shoes in two suitcases. How many shoes will be in each suitcase?

___________ shoes

Answer:

4 shoes.

Explanation:

Carmen has 8 shoes.

She places an equal number of shoes in two suitcases.

4 shoes will be in each suitcase.

4 + 4 = 8

Question 5.

A postcard costs 450. Jason wants to buy 2 postcards. He has 2 quarters, 2 dimes, and 3 nickels. How much money does he have?

How many pennies does he need to buy the postcards?

_______________ pennies

Answer:

5 pennies.

Explanation:

A postcard costs 450. Jason wants to buy 2 postcards.

45 + 45 = 90

2 quarters = 50 cents

2 dimes = 20 cents

3 nickels = 15 cents

50 + 20 + 15 = 85 cents

he need 5 more pennies

Question 6.

The subway arrives at the station on the four and half hour. It is now 4:30. Kate’s family is on the way but it will take one hour to get there. What is the earliest time her family can get on the subway?

Answer:

5:30

Explanation:

subway arrives at the station on the four and half hour that is 4:30

It is now 4:30

Kate’s family is on the way but it will take one hour to get there.

so, they reaches the sub way at 5:30

### McGraw Hill My Math Grade 2 Chapter 10 Lesson 3 My Homework Answer Key

**Problem Solving**

**Underline what you know. Circle what you need to find. Find a pattern to solve.**

Question 1.

There is one plane that leaves from the city to the ski resort every hour. The first plane leaves at 10:00. The last plane leaves at 4:00. How many planes fly to the resort each day?

___________ phones

Answer:

7 planes

Explanation:

The first plane leaves at 10:00.

The last plane leaves at 4:00.

10:00 to 4:00 it is 7 hours.

so, 7 planes fly to the resort each day

Question 2.

Mr. Lyon’s class arrived at the zoo at 9:30. They met the zookeeper 30 minutes later. Another 30 minutes after that, they saw the penguins. What time did they see the penguins?

Answer:

10:30

Explanation:

Mr. Lyon’s class arrived at the zoo at 9:30.

They met the zookeeper 30 minutes later.

Another 30 minutes after that, they saw the penguins.

9:30 at zoo

10:00 at zookeeper

10:30 at penguins

Question 3.

Julio’s family wants to take a ride on a tour bus. It leaves the bus station every half hour. It is 1:00. They just missed the bus. What are the times for the next two buses?

__________, ____________

Answer:

1:30 and 2:00

Explanation:

Bus leaves the station every half hour

They missed at 1:00 so they have to get the bus by 1:30 or 2:00

**Math at Home** Ask your child to keep a journal for one evening. At each half hour. have your child write the time and record his or her activity at that time. At the end of the evening, see if there were any repealing or other patterns in their activities.