All the solutions provided inÂ **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 6 Check My Progress **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Chapter 6 Check My Progress Answer Key

**Check My Progress Page No. (477 – 478)**

**Vocabulary Check**

**Complete each sentence.**

adding

subtracting

sum

Question 1.

By ______________ two numbers together, you can find the sum.

Answer:

By adding two numbers together, you can find the sum.

Question 2.

The answer to an addition problem is called the ____________.

Answer:

The answer to an addition problem is called the sum.

**Concept Check**

**Add.**

Question 3.

3 tens – 2 tens = _____________ tens

30 – 20 = _____________

Answer:

Explanation:

3 tens – 2 tens = 1 ten

30 – 20 = 10.

Question 4.

4 tens + 4 tens = _____________ tens

40 + 40 = _____________

Answer:

Explanation:

4 tens + 4 tens = 8 tens

40 + 40 = 80.

Question 5.

67 + 1 = ______________

Answer:

Explanation:

67 + 1 =

Add ones

7 + 1 = 8

So, 67 + 1 = 68.

Question 6.

75 + 3 = _______________

Answer:

Explanation:

75 + 3 =

Add ones

5 + 3 = 8

So, 75 + 3 = 78.

Question 7.

Answer:

Explanation:

35 + 4 =

Add ones

5 + 4 = 9

35 + 4 = 39

So, the sum of 35 and 4 is 39.

Question 8.

Answer:

Explanation:

52 + 7 =

Add ones

2 + 7 = 9

52 + 7 = 59

So, the sum of 52 and 7 is 59.

Question 9.

Answer:

Explanation:

84 + 5 =

Add ones

4 + 5 = 9

84 + 5 = 89

So, the sum of 84 and 5 is 89.

**Circle the ones to show regrouping. Write your answer.**

Question 10.

16 + 8 = ____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 4 ones = 24

So, 16 + 8 = 24.

Question 11.

14 + 8 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 2 ones = 22

So, 14 + 8 = 22.

Question 12.

18 + 9 = _____________

Answer:

Explanation:

Count ones

Circle 10 ones

Regroup 10 ones as 1 ten

Move the ones to tens column

2 tensÂ 7 ones = 27

So, 18 + 9 = 27.

**Test Practice**

Question 13.

Dalton swam 25 laps in the swimming pool. Madison swam 9 laps. How many laps did they swim in all?

(A) 16

(B) 25

(C) 34

(D) 35

Answer:

(C) 34

Explanation:

25 = 2 tens 5 ones

9 = 9 ones

Count ones

Regroup 10 ones as 1 ten

3 tensÂ 4 ones = 34

So, 25 + 9 = 34

Therefore, they swim 34 laps in all.