# McGraw Hill My Math Grade 2 Chapter 2 Lesson 5 Answer Key Repeated Addition with Arrays

All the solutions provided in McGraw Hill Math Grade 2 Answer Key PDF Chapter 2 Lesson 5 Repeated Addition with ArraysÂ will give you a clear idea of the concepts.

Explore and Explain

Teacher Directions: Jamar and 3 of his friends each collect 2 rocks. How many rocks do they hove in oil? Use connecting cubes to show equal groups of rocks. Color in the grid to show your work. Write a number sentence to show the total.
Explanation:

See and Show

In an array, objects are shown in rows and columns.

Describe each array using a number sentence.

Question 2.

____ rows of _____ turtles

Explanation:
sum = number of rows x number of columns
3 x 3 = 9
There are 3 rows of turtles
In each row there are 3 turtles

Question 3.

____ + ___ = ____
____ rows of ____ cacti

Explanation:
sum = number of rows x number of columns
2 x 4 = 8
2 rows of 4Â  cacti so, 8 in all

Question 3.
Shade the grid to show 4 rows of 2. Write a number sentence to describe it.

Explanation:
sum = number of rows x number of columns
4 x 2 = 8
Number of boxes colored are 8

On My Own

Describe the array using a number sentence.

Question 4.

Explanation:
sum = number of rows x number of columns
There are 3 rows of lizards
in each row there are 5
5 x 3 = 15

Shade each grid to show the array. Write a number sentence to describe it.

Question 5.
Show 4 rows of 3.

Explanation:
sum = number of rows x number of columns
4 x 3 =12
Number of boxes colored are 12

Question 6.
Show 4 rows of 1.

Explanation:
sum = number of rows x number of columns
1 x 4 = 4
Number of boxes colored are 4

Question 7.
Show 2 rows of 5.

Explanation:
sum = number of rows x number of columns
2 x 5 = 10
Number of boxes colored are 10

Question 8.
Show 3 rows of 4.

Explanation:
sum = number of rows x number of columns
3 x 4 = 12
Number of boxes colored are 12

Problem Solving

Use an array to solve.

Question 9.
Kathy puts 5 chairs in one row. She puts the same number of chairs in three more rows. How many chairs are there in all?
_______ chairs

Explanation:
sum = number of rows x number of columns
4 x 5 = 20
Number of boxes colored are 20

Question 10.
Three hills each have 4 wind turbines. How many wind turbines are there mall?
_______ wind turbines

Explanation:
sum = number of rows x number of columns
3 x 4 = 12
Number of boxes colored are 12

Write Math Describe how this array shows the number sentence 2 + 2 + 2= 6.

### McGraw Hill My Math Grade 2 Chapter 2 Lesson 5 My Homework Answer Key

Describe each array using a number sentence.

Question 1.

___ rows of ___ mice

Explanation:
sum = number of rows x number of columns
4 x 3 = 12
there are 3 rows of mice in each row there are 4

Question 2.

___ rows of ___ owls

Explanation:
sum = number of rows x number of columns
5 x 2 = 10
There are 2 rows of owls in each row there are 5 owls.

Question 3.
Show 3 rows of 5.

________

Explanation:
sum = number of rows x number of columns
3 x 5 = 15
Number of boxes colored are 15

Question 4.
Show 3 rows of 2.

________

Explanation:
sum = number of rows x number of columns
2 x 3 = 6
Number of boxes colored are 6

Describe each array using a number sentence.

Question 5.
Show 3 rows of 5.

Explanation:
sum = number of rows x number of columns
3 x 5 = 15
Number of boxes colored are 15

Question 6.
Show 4 rows of 2.

Explanation:
sum = number of rows x number of columns
4 x 2 = 8
Number of boxes colored are 8

Question 7.
Show 2 rows of 4.

Explanation:
sum = number of rows x number of columns
2 x 4 = 8
Number of boxes colored are 8

Question 8.
There are 4 legs on 1 camel. How many legs are on 5 camels?
______ legs in all
5 x 4 = 20 legs in all
Explanation:
sum = number of rows x number of columns
1 camel has 4 legs
there are 5 camels
4 + 4 + 4 + 4 + 4 = 20
4 xÂ  5 = 20

Vocabulary Check

Question 9.
Draw an array of 2 rows of 3.