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 1.1 Answer Key Understand Ten and Ones.

## Texas Go Math Grade 1 Lesson 1.1 Answer Key Understand Ten and Ones

**Essential Question**

How can you use different ways to write a number as ten and ones?

Explanation:

By making to 10 frame

13 in 3 different ways

1 tens 3 ones

10 + 3 = 13

10 ones 3 ones

**Explore**

Use to model the problem.

Draw the to show your work.

**For The Teacher**

- Read the problem. Tim has 10 pennies. He gets 2 more pennies. How many pennies does Tim have now?

Explanation:

Tim has 10 pennies. He gets 2 more pennies.

10 + 2 = 12

I tens and 2 ones

12 pennies that Tim have now

**Math Talk**

**Mathematical processes**

How does your picture show the pennies Tim has? Explain.

Explanation:

Tim has 10 pennies. He gets 2 more pennies.

10 + 2 = 12

I tens and 2 ones

12 pennies that Tim have now

**Model and Draw**

13 is a two-digit number. The 1 in 13 means 1 ten. The 3 in 13 means 3 ones.

**Think**

10 ones and 3 ones is the same as 1 ten 3 ones.

______ ten ______ ones

____ + _____

_____

Explanation:

1 ten 3 ones

10 + 3

13

10 ones = 1 tens.

**Share and Show**

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

Question 1.

Answer:

Explanation:

10 + 5 = 15

1 tens and 5 ones

10 ones and 5 ones

This shows the 3 different ways

The sum of 10 and 5 is 15

Question 2.

Answer:

Explanation:

10 + 2 = 12

1 tens and 2 ones

10 ones and 2 ones

This shows the 3 different ways

The sum of 10 and 2 is 12

**Problem Solving**

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

Question 3.

Answer:

Explanation:

10 + 4 = 14

The sum of 10 and 4 is 14

**Draw to show the number. Write the number three different ways.**

Question 4.

**H.O.T.** Karen has 7 ones. Jimmy has 9 ones. They put all their ones together. What number did they make?

Answer:

Explanation:

7 + 9 = 16

1 tens and 6 ones

10 ones and 6 ones

we can write in these 3 ways

Question 5.

**H.O.T. Multi-Step** Emma has 5 ones. Caden has 3 ones. They put all their ones together. Alex put 1 ten with the ones. What number did they make?

Answer:

Explanation:

5 + 3 = 8

10 + 8 = 18

1 tens and 8 ones

**Choose the correct answer.**

Question 6.

Apply Two friends tossed 18 juggling balls back and forth 12 times. Which shows 18?

Answer:

Explanation:

1 tens and 8 ones

Bubbled that shows 18

Question 7.

**Multi-Step** Mona has 1 ten and 3 ones. Then Nate and Avery each gave 2 ones to Mona. How many tens and ones does Mona have now?

(A) 1 ten 0 ones

(B) 1 ten 7 ones

(C) 7 tens 1 one

Answer: B

Explanation:

1 tens and 7 ones does Mona have now

3 + 2 + 2 = 7

1 ten 7 ones

Question 8.

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

(A) 1 ten 12 ones

(B) 1 ten 2 ones

(A) 1 ten 7 ones

Answer: B

Explanation:

1 ten 2 ones shows the same number

10 + 2 = 12

**Take Home Activity**

- Show your child one group of 10 pennies and one group of 8 pennies Ask your child to tell how many tens and ones there are, and say the number. Repeat with other numbers from 11 to 19.

10 + 8 = 18

1 tens and 1 ones

10 + 1 = 11

1 tens and 2 ones

10 + 2 = 12

1 tens and 3 ones

10 + 3 = 13

1 tens and 4 ones

10 + 4 = 14

1 tens and 5 ones

10 + 5 = 15

1 tens and 6 ones

10 + 6 = 16

1 tens and 7 ones

10 + 7 = 17

1 tens and 8 ones

10 + 8 = 18

1 tens and 8 ones

10 + 9 = 19

1 tens and 9 ones

### Texas Go Math Grade 1 Lesson 1.1 Homework and Practice Answer Key

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

Question 1.

Answer:

Explanation:

10 + 4 = 14

1 tens and 4 ones

10 ones and 4 ones

This shows the 3 different ways

Question 2.

Answer:

Explanation:

10 + 4 = 11

1 tens and 1 ones

10 ones and 1 ones

This shows the 1 different ways

**Problem Solving**

**Draw to show the number. Write the number different ways.**

Question 3.

Anna has 8 apples. Jeremy has 7 apples. They put all their apples together. What number of apples did they make?

____ ten ____ ones

___ + ____

______

Answer:

1 tens and 5 ones

Explanation:

8 + 7 = 15

15 apples that they make

**Texas Test Prep**

**Lesson Check**

**Choose the correct answer.**

Question 4.

Myra drew 19 different stars on 12 pieces of paper. Which shows 19?

Answer:

Explanation:

Bubbled the correct option

1 tens and 9 ones

10 + 9 = 19

Question 5.

Jerry used counters to show 16. Which shows another way to write 16?

(A) 1 ten 4 ones

(B) 6 tens 1 one

(C) 1 ten 6 ones

Answer: C

Explanation:

1 ten 6 ones

shows another way to write 16

Question 6.

**Multi-Step** Carla has 9 balls. Alex gives Carla 5 balls. Then he gives her 4 more balls. Which shows the number of balls Carla has?

(A) 1 ten 8 ones

(B) 1 ten 3 ones

(C) 1 ten 5 ones

Answer: A

Explanation:

Carla has 9 balls. Alex gives Carla 5 balls.

9 + 5 = 14

Then he gives her 4 more balls.

14 + 4 = 18

1 ten 8 ones