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There are a ton of i-Ready answer keys that you will be able to find on the internet. These followings are the i-Ready answer keys for Grade 1 Mathematics Teacher At-Home Activity Packet. Apparently, this packet includes 22 sets of practice problems that align to important math concepts that have likely been taught this year.

However, the answer keys below only include some of them. Open your browser and start looking for the complete answer if you want. For the other answer keys of i-Ready Grade 1 Mathematics, here is the quick link for you: https://capubstore.blob.core.windows.net/athomepdfs/iready-at-home-activity-packets-teacher-math-grade-1-2020.pdf. For those who want to find the other i–Ready answer keys, you can also follow the same thing. As there are a lot of them, you can just choose the answer key that you are looking for. Counting On to Add

Count on to add

1. 7 + 1 = 8
2. 8 + 2 = 10
3. 7 + 2 = 9
4. 6 + 3 = 9

Discuss It

Did you always start at 1 when you counted? Explain.

Sample answer: No. I started with the first number of blocks and then counted on form that number.

Using Doubles and Near Doubles

Use what you know about doubles to solve.

1. 1 black sticker. 2 white stickers. How many stickers in all?

1 + 2 = 3 stickers

1. 3 white stickers. 3 black stickers. How many stickers in all?

3 + 3 = 6 stickers

1. 4 black stickers. 4 white stickers. How many stickers in all?

4 + 4 = 8 stickers

1. 4 black squares. 5 white squares. How many squares in all?

4 + 5 = 9 squares

Discuss It

How is 3 + 3 like 3 + 4? How is it different?

Answers will vary. Possible answer: 3 + 3 is a doubles fact and 3 + 4 is more.

Adding in Any Order with Near Doubles

Use the blocks. Complete the addition equations.

1. 5 + 1 = 6

1 + 5 = 6

1. 6 + 0 = 6

0 + 6 = 6

1. 5 + 2 = 7

2 + 5 = 7

1. 3 + 4 = 7

4 + 3 = 7

1. 1 + 7 = 8

7 + 1 = 8

1. 6 + 2 = 8

2 + 6 = 8

1. 5 + 4 = 9

4 + 5 = 9

1. 3 + 6 = 9

6 + 3 = 9

Making a Ten to Add

Fill in the number bonds to make a ten.

1. Fill 9 + 3.

10 + 2 = 12

9 + 3 = 12

1. Find 9 + 5.

10 + 4 = 14

9 + 5 = 14

1. Find 8 + 4.

10 + 2 = 12

8 + 4 = 12

1. Find 8 + 6.

10 + 4 = 14

8 + 6 = 14

1. Find 7 + 5

10 + 2 = 12

7 + 5 = 12

1. Find 7 + 6.

10 + 3 = 13

7 + 6 = 13

1. Find 7 + 4.

10 + 1 = 11

7 + 4 = 11

Discuss It

How does making a ten help you add two numbers?

Answers will vary. Possible answer: Adding two numbers is easier when one of the numbers is ten.

Understanding of Missing Addends

1. Find 6 – 5.

5 + 1 = 6

6 – 5 = 1

1. Find 7 – 6

6 + 1 = 7

7 – 6 = 1

1. Find 5 – 2.

2 + 3 = 5

5 – 2 = 3

1. Find 6 – 4

4 – 2 = 6

6 – 4 = 2

1. Find 8 – 4.

4 + 4 = 8

8 – 4 = 4

1. Find 9 – 7.

7 + 2 = 9

9 – 7 = 2

1. Write an addition equation that helps you find 6 – 3. Then complete the subtraction equation.

3 + 3 = 6

6 – 3 = 3

Discuss It

How can an addition equation help you solve a subtraction equation?

Answers will vary. Possible answer: I can write a missing addend equation, and then count on to find the missing addend.

Counting On to Subtract

1. Find 6 – 4

4 + 2 = 6

6 – 4 = 2

1. Find 7 – 3.

3 + 4 = 7

7 – 3 = 4

1. Find 8 – 6.

6 + 2 = 8

8 – 6 = 2

1. Find 9 – 8.

8 + 1 = 9

9 – 8 = 1

1. Find 6 – 5.

5 + 1 = 6

6 – 5 = 1

1. Find 9 – 4.

4 + 5 = 9

9 – 4 = 5

1. Find 8 – 2.

2 + 6 = 8

8 – 2 = 6

Discuss It

How is solving 6 – 4 the same as solving 9 – 4? How is it different?

I start at the number 4 for both problems. For problem 6 – 4, I count on to 6. For 9 – 4, I count on to 9.

Making a Ten to Subtract

1. Find 15 – 7.

15 – 5 = 10

10 – 2 = 8

15 – 7 = 8

1. Find 13 – 6.

13 – 3 = 10

10 – 3 = 7

13 – 6 = 7

1. Find 15 – 9.

15 – 5 = 10

10 – 4 = 6

15 – 9 = 6

1. Find 12 – 7.

12 – 2 = 10

10 – 5 = 5

12 – 7 = 5

1. Find 11 – 7.

11 – 1 = 10

10 – 6 = 4

11 – 7 = 4

1. Find 16 – 9.

16 – 6 = 10

10 – 3 = 7

16 – 9 = 7

Number Partners for 10

Draw counters to make 10. Then complete the equation.

10 = 9 + 1

10 = 1 + 9

10 = 8 + 2

10 = 2 + 8

10 = 6 + 4

10 = 4 + 6

10 = 5 + 5