All the solutions provided in **McGraw Hill Math Grade 2 Answer Key PDF Chapter 3 Lesson 6 Add Three or Four Two-Digit Numbers** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 3 Lesson 6 Add Three or Four Two-Digit Numbers

**Explore and Explain**

Teacher Directions: Miley’s class is having a car wash. They washed 13 blue cars, 22 red cars, and I 4 white cars. How many cars did they wash in all? Use base-ten blocks to show each number. Trace the blocks. Write the sum.

Explanation:

They washed 13 blue cars, 22 red cars,

13 + 22 = 35

and I 4 white cars.

35 + 14 = 49

49 cars that they wash in all

**See and Show**

You can add three and four two-digit numbers. Line up the ones and the tens. Add the ones first, then add the tens.

**Helpful Hint**

Remember, when you add the ones, look for a fact you know.

Add three numbers.

Add four numbers.

**Add.**

Question 1.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 2.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 3.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 4.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 5.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 6.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 7.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 8.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

**Talk Math** How is adding three two-digit numbers like adding two two-digit numbers?

**On My Own**

**Add.**

Question 9.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 10.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 11.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 12.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 13.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 14.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 15.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 16.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 17.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 18.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 19.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 20.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 21.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 22.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 23.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 24.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

**Problem Solving**

Question 25.

Logan has 11 paper clips. Amanda has 31 paper clips. Nate has 26 paper clips. How many paper clips do they have altogether?

Answer:

68 paper clips

Explanation:

Logan has 11 paper clips. Amanda has 31 paper clips.

11 + 31 = 42

Nate has 26 paper clips.

42 + 26 = 68

68 paper clips that they have altogether.

Question 26.

Ben sold 28 tickets to the Sunny sold 12 tickets. Jill Tom sold 32 tickets. How they sell in all?

_____ tickets

Answer:

72 tickets

Explanation:

Ben sold 28 tickets to the Sunny sold 12 tickets.

28 + 12 = 40

Jill Tom sold 32 tickets.

40 + 32 = 72

72 they sell in all.

**HOT Problem** 14 boys play basketball. 12 boys play soccer. 16 boys play baseball. How many boys play basketball, soccer, or baseball?

Jayden solved the problem like this:

14 + 12 + 16 = 312 boys

Tell why he is wrong. Make it right. Explain.

____________________________________________

____________________________________________

____________________________________________

Explanation:

he did not regrouped the tens and ones

**Ones** Place Value

4 + 2 + 6 = 12

Put the 2 in Ones place

Carry the 1 to Tens place

**Tens** Place Value

1 + 1 + 1 + 1 = 4

Put the 4 in Tens place

### McGraw Hill My Math Grade 2 Chapter 3 Lesson 6 My Homework Answer Key

**Helpful Hint**

Look for a fact you know or doubles.

**Practice**

**Add.**

Question 1.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 2.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 3.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 4.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 5.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

Question 6.

Answer:

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.

**Read and solve the problem.**

Question 7.

13 students play the bells. 16 students play the drums. 24 students play the recorder. 14 students play trumpet. How many students play instruments?

___ students

Answer:

67 students

Explanation:

13 students play the bells. 16 students play the drums.

13 + 16 = 29

24 students play the recorder.

29 + 24 = 53

14 students play trumpet.

53 + 14 = 67

67 students play instruments

Question 8.

Mr. Tan picks 24 apples. Mrs. Tan picks 35 apples. Their son picks 26 apples. How many apples do the Tans pick in all?

____ apples

Answer:

85 apples

Explanation:

Mr. Tan picks 24 apples. Mrs. Tan picks 35 apples.

24 + 35 = 59

Their son picks 26 apples.

59 + 26 = 85

85 apples that the Tans pick in all

**Test Practice**

Question 9.

A class collects 20 toys on Monday, 15 toys on Tuesday and 10 toys on Wednesday How many toys did they collect on Monday and Wednesday?

(A) 10

(B) 20

(C) 30

(D) 35

Answer:

C

Explanation:

A class collects 20 toys on Monday, 15 toys on Tuesday

20 + 15 = 35

and 10 toys on Wednesday

35 + 10 = 45

20 + 10 = 30 toys that they collect on Monday and Wednesday

**Math at Home** Have your child explain how to add 28 + 12 + 35.

Explanation:

If there are 3 or more addends we have to add the ones place first

If the sum is more than 9 then we have to regroup to tens and ones

The we have to add the tens place then if it is needed again we have to regroup as hundreds.