Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 1.8 Answer Key Expanded Form.

## Texas Go Math Grade 1 Lesson 1.8 Answer Key Expanded Form

**Essential Question**

How can you write 112 in expanded form?

**Explore**

**Use to model the problem.**

**Draw to show your work**

Answer:

Explanation:

Total number is blocks are 112

So we can write as 1 hundred 1 tens and 2 ones or 11 tens and 2 ones

**For The Teacher**

- Ask children to use base-ten blocks to show 112 two different ways

**Math Talk
Mathematical Processes**

How did you decide how many hundreds, tens, and ones are in 112? Explain.

Answer:

112 is a three-digit number.

The 1 in 112means 1 hundred.

The 1 in 112 means 1 ten.

The 2 in 112 means 2 ones.

**Model and Draw**

115 is a three-digit number.

The 1 in 115 means 1 hundred.

The 1 in 115 means 1 ten.

The 5 in 115 means 5 ones.

Answer:

Explanation:

Total number is blocks are 115

So we can write as 1 hundred 1 tens and 5 ones

**Share and Show**

**Use the model. Write the number three different ways.**

Question 1.

Answer:

Explanation:

Total number is blocks are 118

So we can write as 1 hundred 1 ten and 8 ones

Question 2.

Answer:

Explanation:

Total number is blocks are 83

So we can write as 8 tens and 3 ones

**Problem Solving**

**Use the model. Write the number three different ways.**

Question 3.

Answer:

Explanation:

119 is a three-digit number.

The 1 in 119 means 1 hundred.

The 1 in 119 means 1 ten.

The 9 in 119 means 9 ones.

**Draw a quick picture to show the number. Write the number three different ways.**

Question 4.

**H.O.T.** Dora has 9 tens. Tim has 23 ones. They put all their tens and ones together. What number did they make?

_____ hundred ___ ten __ ones

___ + ___ + _____

_______

Answer: 113

1 hundred 1 ten 3 ones

100 + 10 + 3= 113

Explanation:

Dora has 9 tens.

Tim has 23 ones = 2 tens and 3 ones

9 tens + 2 tens + 3 ones = 11 tens + 3 ones = 113

Question 5.

**H.O.T. Multi-Step** Peter has 10 tens. Maria has 1 ten. They put all their tens together. Olivia put 6 ones with all the tens. What number did they make?

_____ hundred ___ ten __ ones

___ + ___ + _____

_______

Answer: 116

1 hundred 1 ten 6 ones

100 + 10 + 6 = 116

Explanation:

Peter has 10 tens. Maria has 1 ten.

10 tens + 1 tens = 11 tens

Olivia put 6 ones with all the tens.

11 tens + 6 ones = 116

**Daily Assessment Task**

**Choose the correct answer.**

Question 6.

Tyler counts blocks. There are 10 tens and 4 ones. How many blocks did he count?

(A) 14

(B) 104

(C) 140

Answer: B

Explanation:

10 tens + 4 ones = 100 + 4 = 104

Question 7.

**Use Tools** Ginger made this model. What number does her model show?

(A) 115

(B) 15

(C) 105

Answer: A

Explanation:

1 hundred + 1 ten + 5 ones = 100 + 10 +5 = 115

Question 8.

Which shows the same number?

(A) 1 hundred 3 ones

(B) 10 tens 13 ones

(C) 10 tens 3 ones

Answer: B

Explanation:

1 hundred + 1 ten + 3 ones = 10 tens + 10 ones + 3 ones = 10 tens + 13 ones

Question 9.

**Texas Test Prep** Which shows the same number?

(A) 1 hundred 1 ten 3 ones

(B) 1 hundred 2 ones

(C) 1 hundred 1 ten 1 one

Answer: A

Explanation:

11 tens + 3 ones =10 tens + 1 ten + 3 ones = 1 hundred + 1 ten + 3 ones

### Texas Go Math Grade 1 Lesson 1.8 Homework and Practice Answer Key

**Use the model. Write the number three different ways.**

Question 1.

Answer:

Explanation:

Square = 1 hundred

Line = 1 ten

circle = 1 ones

1 hundred + 1 ten + 3 ones = 100 + 10 + 3 = 113

Question 2.

Answer:

Explanation:

9 tens + 6 ones = 90 + 6 = 96

**Problem Solving**

**Choose a way to solve. Draw or write to explain.**

Question 3.

**Multi-Step** Lev has 9 tens. Jim has 1 ten. They put all their tens together. Dawn puts 9 ones with the tens. What number did they make?

____ hundred ___ tens ___ ones

______ + _____ + _____

_____

Answer:

10 tens 9 ones

100 + 9 = 109

Explanation:

Lev has 9 tens. = 90

Jim has 1 ten. = 10

90 + 10 = 100

Dawn puts 9 ones with the tens.

100 + 9 = 109

**Lesson Check**

**Choose the correct answer.**

Question 4.

Ali bounces a ball while Tim counts. Tim counts 11 tens and 2 ones. How many bounces did Tim count?

(A) 112

(B) 102

(C) 120

Answer: A

Explanation:

Tim counts 11 tens and 2 ones = 110 + 2 =112

Question 5.

Tim uses blocks to count the bounces. What number does the model show?

(A) 116

(B) 106

(C) 16

Answer: B

Explanation:

1 hundred + 6 ones = 100 + 6 = 106

Question 6.

Which shows the same number?

(A) 1 hundred 2 ones

(B) 11 tens 20 ones

(C) 10 tens 20 ones

Answer: C

Explanation:

1 hundred = 10 tens

2 tens = 20 ones

So 10 tens 20 ones

Question 7.

Which shows the same number?

Answer:

Explanation:

1 hundred 1 ten 5 ones = 10 tens 1 ten 5 ones = 11 tens 5 ones