Grade 1 addition worksheets - Adding two 2-digit numbers in ... - Free Printable

Let’s solve each addition problem step by step. Remember, we’re adding two-digit numbers in columns — and there’s no regrouping, which means the ones digits add up to less than 10, and the tens digits also add up to less than 10. So we can just add straight down!

We’ll go one by one:

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1) 14 + 21
Ones: 4 + 1 = 5
Tens: 1 + 2 = 3
→ 35

2) 28 + 60
Ones: 8 + 0 = 8
Tens: 2 + 6 = 8
→ 88

3) 22 + 71
Ones: 2 + 1 = 3
Tens: 2 + 7 = 9
→ 93

4) 31 + 16
Ones: 1 + 6 = 7
Tens: 3 + 1 = 4
→ 47

5) 79 + 10
Ones: 9 + 0 = 9
Tens: 7 + 1 = 8
→ 89

6) 72 + 3 → Think of it as 72 + 03
Ones: 2 + 3 = 5
Tens: 7 + 0 = 7
→ 75

7) 1 + 13 → Think of it as 01 + 13
Ones: 1 + 3 = 4
Tens: 0 + 1 = 1
→ 14

8) 87 + 11
Ones: 7 + 1 = 8
Tens: 8 + 1 = 9
→ 98

9) 16 + 60
Ones: 6 + 0 = 6
Tens: 1 + 6 = 7
→ 76

10) 8 + 60 → Think of it as 08 + 60
Ones: 8 + 0 = 8
Tens: 0 + 6 = 6
→ 68

11) 12 + 68
Ones: 2 + 8 = 10 → Wait! That’s 10 — but the worksheet says “no regrouping”. Let me double-check… Actually, 2 + 8 = 10, which *would* require regrouping. But maybe this is a trick? Or perhaps I misread?

Wait — let’s look again at the original image description. The title says “no regrouping”, so all problems should be solvable without carrying over. Let me check #11 again: 12 + 68.

Ones: 2 + 8 = 10 → that’s 10, which needs regrouping. Hmm. Maybe it’s a typo? Or maybe I’m supposed to do it anyway? But the instruction says “no regrouping”.

Actually, looking back — perhaps I made a mistake. Let me recheck all problems for possible errors.

Wait — maybe #11 is meant to be 12 + 68, and even though 2+8=10, since the tens column is 1+6=7, and then we’d have 70 + 10 = 80? But that involves regrouping.

But the worksheet says “no regrouping” — so perhaps this is an error? Or maybe I should proceed assuming no regrouping is needed, meaning the sum of ones must be <10.

Let me check the actual numbers from the image (as described):

Problem 11: 12 + 68 → 2+8=10 → requires regrouping. But the worksheet says “no regrouping”. This is confusing.

Wait — perhaps I misread the problem. Let me list them again carefully from the user's text:

From the user’s input:

11) 12
+ 68

Yes, that’s what’s written.

But if we follow “no regrouping”, then this problem shouldn’t be here. However, since it’s given, and the student is expected to solve it, perhaps we just do regular addition? But the title says “no regrouping”.

Alternatively, maybe “no regrouping” means that in the context of the worksheet, all problems are designed so that no regrouping is needed — so perhaps I made a mistake in reading?

Wait — let’s calculate 12 + 68 normally: 12 + 68 = 80. And 2+8=10, so you write 0 and carry 1 — that’s regrouping. So this contradicts the title.

But since the user provided this worksheet, and asked to solve it, I think we should just solve each problem as normal addition, ignoring the “no regrouping” label if it doesn’t fit — or perhaps the label is misleading.

To avoid confusion, I’ll solve all problems using standard column addition, and if any require regrouping, I’ll do it — because otherwise some answers would be wrong.

So for #11: 12 + 68

Ones: 2 + 8 = 10 → write 0, carry 1
Tens: 1 + 6 + 1 (carry) = 8
→ 80

Similarly, let’s check others that might need regrouping.

#12: 48 + 30 → 8+0=8, 4+3=7 → 78 — no regrouping.

#13: 11 + 67 → 1+7=8, 1+6=7 → 78 — no regrouping.

#14: 9 + 80 → 9+0=9, 0+8=8 → 89 — no regrouping.

#15: 15 + 73 → 5+3=8, 1+7=8 → 88 — no regrouping.

#16: 60 + 14 → 0+4=4, 6+1=7 → 74 — no regrouping.

#17: 48 + 50 → 8+0=8, 4+5=9 → 98 — no regrouping.

#18: 46 + 32 → 6+2=8, 4+3=7 → 78 — no regrouping.

#19: 54 + 12 → 4+2=6, 5+1=6 → 66 — no regrouping.

#20: 73 + 13 → 3+3=6, 7+1=8 → 86 — no regrouping.

Only #11 seems to require regrouping. But since it’s included, I’ll solve it correctly with regrouping.

Perhaps the “no regrouping” refers to most problems, or it’s a mistake. Anyway, for accuracy, I’ll compute each sum properly.

So let’s finalize all answers:

1) 14 + 21 = 35
2) 28 + 60 = 88
3) 22 + 71 = 93
4) 31 + 16 = 47
5) 79 + 10 = 89
6) 72 + 3 = 75
7) 1 + 13 = 14
8) 87 + 11 = 98
9) 16 + 60 = 76
10) 8 + 60 = 68
11) 12 + 68 = 80
12) 48 + 30 = 78
13) 11 + 67 = 78
14) 9 + 80 = 89
15) 15 + 73 = 88
16) 60 + 14 = 74
17) 48 + 50 = 98
18) 46 + 32 = 78
19) 54 + 12 = 66
20) 73 + 13 = 86

I’ve double-checked each calculation. All are correct.

Final Answer:
35, 88, 93, 47, 89, 75, 14, 98, 76, 68, 80, 78, 78, 89, 88, 74, 98, 78, 66, 86