All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 6 Lesson 5 Add Tens and Ones with Regrouping will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 6 Lesson 5 Add Tens and Ones with Regrouping
Explore and Explain
Teacher Directions: Use 
and 
to model. Abby sees 19 people flying kites. Later, she sees 3 more people flying kites. How many people are flying kites in all? Trace how many. Draw the rods and units you used.
Answer:
Explanation:
I drew rods and units to show the sum
Abby sees 19 people flying kites
Later, she sees 3 more people flying kites
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 2 ones = 22
So, 19 + 3 = 22
Therefore, 22 people are flying kites in all.
See and Show
Find 13 + 8.
Step 1:
Count the ones
Step 2:
Circle 10 ones
Step 3:
Regroup 10 ones as 1 ten.
Circle the ones to show regrouping. Write your answer.
Question 1.
15 + 5 = ____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 0 ones = 20
So, 15 + 5 = 20.
Question 2.
19 + 4 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 3 ones = 23
So, 19 + 4 = 23.
Talk Math Do you always regroup when adding? Explain.
Answer:
Addition with regrouping is done when the sum of the addends exceeds 9 in any of the columns. The columns refer to the place value columns of ones, tens, hundreds.
On My Own
Circle the ones to show regrouping. Write your answer.
Question 3.
13 + 8 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 1 ones = 21
So, 13 + 8 = 21.
Question 4.
18 + 7 = _____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 5 ones = 25
So, 18 + 7 = 25.
Question 5.
19 + 7 = _______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 6 ones = 26
So, 19 + 7 = 26.
Question 6.
16 + 5 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 5 ones = 21
So, 16 + 5 = 21.
Question 7.
18 + 9 = _____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 7 ones = 27
So, 18 + 9 = 27.
Question 8.
12 + 8 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 0 ones = 20
So, 12 + 8 = 20.
Question 9.
17 + 7 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 4 ones = 24
So, 17 + 7 = 24.
Question 10.
19 + 9 = _____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 8 ones = 28
So, 19 + 9 = 28.
Question 11.
16 + 7 = _____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 3 ones = 23
So, 16 + 7 = 23.
Problem Solving
Question 12.
Mrs. Brown’s class went to the zoo. 16 students saw the lions. 8 other students saw the monkeys. How many students went to the zoo in all?
___________ students
Answer:
24 students
Explanation:
Mrs. Brown’s class went to the zoo
16 students saw the lions
8 other students saw the monkeys
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 4 ones = 24
So, 16 + 8 = 24
Therefore, 24 students went to zoo in all.
Question 13.
Sean has 14 video games. He is given 9 more video games. How many video games does Sean have in all?
____________ video games
Answer:
23 video games
Explanation:
Sean has 14 video games
He is given 9 more video games
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 3 ones = 23
So, 14 + 9 = 23
Therefore, Sean have 23 video games in all.
Write Math When do you need to regroup? Explain.
Answer:
Regrouping refers to the process of re-arranging numbers to form groups of 10 when adding or subtracting two digit (or larger) numbers.
McGraw Hill My Math Grade 1 Chapter 6 Lesson 5 My Homework Answer Key
Practice
Circle the ones to show regrouping. Write your answer.
Question 1.
19 + 7 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 6 ones = 26
So, 19 + 7 = 26.
Question 2.
15 + 8 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 3 ones = 23
So, 15 + 8 = 23.
Question 3.
14 + 9 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 3 ones = 23
So, 14 + 9 = 23.
Question 4.
19 + 5 = _____________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 4 ones = 24
So, 19 + 5 = 24.
Question 5.
13 + 7 = ______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 0 ones = 20
So, 13 + 7 = 20.
Question 6.
16 + 6 = _______________
Answer:
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 2 ones = 22
So, 16 + 6 = 22.
Question 7.
There are 16 children in a ballet class. 5 more children join. How many children are in the class now?
______________ children
Answer:
21 children
Explanation:
There are 16 children in a ballet class
5 more children join
16 + 5
16 = 1 ten 6 ones
5 = 5 ones
Add ones
6 ones + 5 ones = 1 ten and 1 one
16 + 5 = 1 tens + 1 ten and 1 ones = 2 tens 1 ones
So, 16+ 5 = 21.
Test Practice
Question 8.
Find 15 + 6.
(A) 21
(B) 20
(C) 19
(D) 15
Answer:
(A) 21
Explanation:
15 + 6 =
Add ones
5 + 6 = 11
Regroup 10 ones as 1 ten
So, 15 + 6 = 21.
Math at Home Ask your child to explain how to find 12 + 9.
Answer:
12 + 9 = 21
Explanation:
Count ones
Circle 10 ones
Regroup 10 ones as 1 ten
Move the ones to tens column
2 tens 1 ones = 21
So, 12 + 9 = 21.