#### Solved Examples and Worksheet for Adding Whole Numbers through 999 with Regrouping

Q1The sum of the numbers 350 and 154 is ___________.
A. 554
B. 504
C. 604
D. 404

Step: 1
 1 [Carry.] 350 154 504
Step: 2
The sum of the numbers 350 and 154 is 504.
Q2
 6 8 + 8 7 9

A. 937
B. 947
C. 957
D. 967

Step: 1
 H T O 1 1 [Carry.] 0 6 8 + 8 7 9 9 4 7
Q3
 9 9 9 + 0 8 8

A. 1,077
B. 1,087
C. 1,067
D. 1,807

Step: 1 Q4
 H T O 1 6 9 + 3 6 7

A. 426
B. 526
C. 436
D. 536

Step: 1
Mention the ones, tens, and hundreds places above the numbers.
Step: 2
 H T O 1 1 [Carry.] 1 6 9 + 3 6 7 5 3 6 [Add.]
Q5
 H T O 8 3 6 + 9 5 6

A. 1692
B. 1782
C. 1792
D. 17102

Step: 1
Mention the ones, tens, and hundreds places above the numbers.
Step: 2
 H T O 1 [Carry.] 8 3 6 + 9 5 6 17 9 2 [Add.]
Q6
 H T O 2 9 6 + 3 8 7

A. 583
B. 683
C. 693
D. 682

Step: 1
Mention the ones, tens, and hundreds places above the numbers.
Step: 2
 H T O 1 1 [Carry.] 2 9 6 + 3 8 7 6 8 3 [Add.]
Q7670 + 760 = ____

A. 1440
B. 1420
C. 1430
D. 1330

Step: 1
Rearrange the numbers vertically.
Step: 2
Mention the ones, tens, and hundreds places above the numbers.
Step: 3
 H T O 1 [Carry.] 6 7 0 + 7 6 0 14 3 0
 5 9 + 6 9 9

A. 768
B. 758
C. 748
D. 778

Step: 1
 H T O 1 1 [Carry.] 5 9 + 6 9 9 7 5 8
 1 8 0 + 2 4 0

A. 420
B. 320
C. 440
D. 430

Step: 1
Mention the ones, tens and hundreds places above the numbers.
Step: 2
 H T O 1 1 8 0 + 2 4 0 4 2 0
Q10
 4 2 0 + 2 8 0

A. 800
B. 500
C. 700
D. 600

Step: 1
Mention the ones, tens and hundreds places above the numbers.
Step: 2
 H T O 1 4 2 0 + 2 8 0 7 0 0
 2 9 7 + 7

A. 404
B. 314
C. 304

Step: 1
Mention the ones, tens and hundred places above the numbers.
Step: 2
 H T O 1 1 2 9 7 + 7 3 0 4

[Carry.]

Q12
 2 4 5 + 2 4 8

A. 493
B. 443
C. 483
D. 393

Step: 1
 H T O 1 2 4 5 + 2 4 8 3
Step: 2
 H T O 1 2 4 5 + 2 4 8 9 3
Step: 3
 H T O 1 2 4 5 + 2 4 8 4 9 3
Q13
 1 3 9 + 0 8 2

A. 221
B. 232
C. 212
D. 122

Step: 1
 H T O 1 1 3 9 + 0 8 2 1
Step: 2
 H T O 1 1 1 3 9 + 0 8 2 2 1
Step: 3
 H T O 1 1 1 3 9 + 0 8 2 2 2 1
 6 6 0 + 7 0

A. 620
B. 730
C. 720
D. 750

Step: 1
Mention the ones, tens and hundreds places above the numbers.
Step: 2
 H T O 1 6 6 0 + 7 0 7 3 0