GRADE 2
Addition
WORKSHEETS
Addition – reviewing basic number facts
Knowing your basic addition facts is helpful. It means you don’t have
to keep on working out the same answers all the time!
1Finish the addition
number wheels.
7+
+
+
8 4
5
3
6 +
= 10
9 +
+ 5
2 7
+
+
+
+
10 17
+ 15
14 +
= 20
12 +
+ 13
16 11
+
+
2 Fill in the missing numbers in these facts.
a 5 + 2 =
b 7 + 3 =
c
d 6 + 7 =
e 3 + 9 =
f 7 +
+5=9
= 15
3 Write 4 addition facts for each number.
10
a
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20
b
+
= 10
+
= 20
+
= 10
+
= 20
+
= 10
+
= 20
+
= 10
+
= 20
Grade 2
| ADDITION |
2.OA.2
1
Addition – reviewing basic number facts
1 Finish these number facts.
a 10 + 3 =
b 10 + 6 =
c 20 + 8 =
d 20 + 7 =
e 30 + 9 =
f 30 + 2 =
2 Put in the missing numbers or signs to make these facts true.
a 10 +
d
=15
+ 10 = 17
b 7
3 = 10
e 10 +
= 18
c
+ 6 = 12
f 5 + 11
16
3Solve these problems. Write the number facts.
aSara had 13 goldfish. Her cousin gave her 7 more. How many
goldfish did she have altogether?
bOmar had $5 before his birthday. After his birthday, he had $20.
How much money was he given? (Hint: which part of the problem
is missing?)
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Grade 2
| ADDITION |
2.OA.2
2
Addition – adding more than 2 numbers
We can add more than 2 numbers at a time and we can add them
in any order. Look at 3 + 5 + 7 = ?
We know that 3 and 7 makes 10, so we can add them together first.
Then we add 5 to 10.
3 + 7 + 5 = 15
3 + 5 + 7 = 15
is the same as
1 Warm up by practicing these make 10 problems.
a 0 +
10 = 10
b 3 +
= 10
c 1 +
= 10
d 9 +
= 10
e 5 +
= 10
f 4 +
= 10
g 8 +
= 10
h 6 +
= 10
i 2 +
= 10
2 Practice turning these addition facts around.
a
b
2+5=
5
2
+
1+7=
=
+
=
3 Circle pairs of numbers that add to 10 first, then add what is left.
a
6
3
4
=
c
9
5
1
e
5
6
4
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13
b
1
5
5
=
=
d
7
6
3
=
=
f
2
1
8
=
Grade 2
| ADDITION |
2.OA.2
3
Addition – counting on
Counting on is a good strategy to choose when adding 1, 2, or 3.
17 + 2 = 19
We start at 17 and count on 2 more.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
1 Use the number track to help you count on. Finish the facts.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
a 14 + 2 =
b 23 + 3 =
c 19 + 1 =
d 17 + 3 =
e 15 + 1 =
f 24 + 2 =
2How quickly can you finish these?
+1
+2
+3
12 + 1 =
14 + 2 =
15 + 3 =
16 + 1 =
21 + 2 =
11 + 3 =
13 + 1 =
17 + 2 =
23 + 3 =
20 + 1 =
23 + 2 =
17 + 3 =
22 + 1 =
15 + 2 =
21 + 3 =
Time
Time
Time
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Grade 2
| ADDITION |
2.OA.2
4
Addition – counting on
If we can count on by 1, 2, or
3, then we can count on by 10,
20 and 30.
Look at 17 + 20 = ?
We start at 17 and jump down
the grid by 10s.
17 + 20 = 37
2
3
4
5
6
7
8
9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
20 is 2 tens so we make 2 jumps.
1
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
1
Practice counting by 10s by reading down the columns on the grid
out loud. Now try doing it without looking at the grid. Give yourself
a check mark for each column you can do.
2 Use the number grid to help you count on. Finish the facts.
a 14 + 10 =
b 34 + 20 =
c 27 + 10 =
d 25 + 30 =
e 46 + 20 =
f 35 + 30 =
Create your own addition facts by writing a number on the left for
3
each fact.
a
+ 20 =
b
+ 10 =
c
+ 10 =
d
+ 30 =
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Grade 2
| ADDITION |
2.OA.2
5
Addition – using number lines
Number lines are helpful tools to use when adding.
Look at 24 + 7 =
?
We start at 24 and jump 7 spaces. It’s important to remember to
count the jumps or spaces, not the numbers!
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
24 + 7 = 31
1 Jump along the number lines and finish each number fact.
a 22 + 9 =
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
b 27 + 7 =
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
c 31 + 8 =
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
2 Trace the jumps and finish the facts.
a
+
=
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
b
+
=
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
c
+
=
30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
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Grade 2
| ADDITION |
2.OA.2
6
Addition – doubling
1
Warm up by matching these doubles facts. How quickly can you do it?
The first one has been done for you.
6
2 + 2
double 3
8
double 5
5 + 5
double 4
6 + 6
4 + 4
double 6
double 2
4
10
12
3 + 3
2 Count the base-ten blocks to help you finish the doubles facts.
a
b
11 + 11 =
12 + 12 =
c
d
13 + 13 =
14 + 14 =
e
f
15 + 15 =
16 + 16 =
g
h
17 + 17 =
18 + 18 =
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Grade 2
| ADDITION |
2.OA.2
7
Addition – bridge to 10
Number lines can help us to bridge tens.
Look at 18 + 6 = ?
We take 2 jumps to the nearest ten. This is 20. Now we need to jump
4 more.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
18 + 6 = 24
1 Jump along these number lines. Finish the statements.
a 17 + 6 =
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
b 18 + 8 =
I jumped
3
to get to
20 . Then I jumped 3
more.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
c 16 + 7 =
I jumped
to get to
20 . Then I jumped
more.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
d 19 + 4 =
I jumped
to get to
20 . Then I jumped
more.
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
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I jumped
to get to
Grade 2
20 . Then I jumped
| ADDITION |
2.OA.2
more.
8
Addition – introducing the vertical format
1 Finish these addition facts in two ways.
a
T
O
1
2
+
T
1
O
1
5
O
e
O
2
1
4
2
2 + 14 =
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| ADDITION |
O
1
0
+
6
f
T
O
3
2
+
3
3
21 + 4 =
Grade 2
T
10 + 6 =
T
+
4
c
4
15 + 4 =
2
+
T
+
2
12 + 2 =
d
b
32 + 3 =
2.OA.2
9
Written methods – addition to 99, no regrouping
Using a written method to add is very similar to this
version of the split strategy:
42 + 31 = (4 tens + 3 tens) + (2 ones + 1 one)
= 7 tens + 3 ones
= 73
The difference is that we set the numbers up in place
value columns and add the ones first.
tens ones
+
4
2
3
1
7
3
1For each addition, complete it with the split strategy and then use the
written method.
a55 + 23 = (
=
=
5
5
2
3
+
) + (
+
)
tens ones
onesones
+
+
=
+
) + (
tenstens
=
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+
tensones
c 61 + 18= (
tens ones
onesones
+
tenstens
)
=
+
tensones
b 42 + 35= (
) + (
tenstens
+
+
)
tens ones
onesones
+
+
tensones
=
Grade 2
| ADDITION |
2.NBT.5
10
Written methods – addition to 99, no regrouping
2Add these using the written method. Add the ones, then the tens.
Write your answer neatly in line with the place value columns.
a
b
c
tens ones
tens ones
tens ones
4 3
1 0
3 6
+
d
3
tens ones
6
+
+
2
e
+
9
f
tens ones
4
+
5
4
3
3
1
4
5
2
tens ones
9
+
2
6
3Now try adding three 2 digit numbers using the written method:
a
tens ones
+
b
c
tens ones
tens ones
3
0
3
4
2
3
2
1
4
1
3
5
2
6
2
3
3
0
+
+
4Write the missing digits in these problems:
a
tens ones
b
2
4
1
9
6
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tens ones
3
2
+
c
tens ones
2
3
2
+
Grade 2
1
2
7
8
| ADDITION |
+
5
9
2.NBT.5
2
8
11
Written methods – addition to 99 with regrouping
Here is a place value board
that shows how regrouping
works. If we have 10 ones,
we should regroup into a ten.
On the first place value board we
can see that there are 3 tens and
11 ones. We regroup 10 ones into
1 ten and we get 4 tens and 1 one.
tens
ones
tens
ones
=
10 ones = 1 ten
1For each set of
a
place value boards,
regroup the ones
into a ten and
show the regrouped
amount on the next b
board. Just use
straight lines for tens
(longs) and squares
for ones (shorts).
tens
ones
tens
ones
tens
ones
tens
ones
2Add the numbers shown in longs and shorts. Use the first place value
board to show the longs and shorts combined and regroup them on the
second board. Record the addition problem in the squares:
tens
ones
tens
ones
+
+
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=
Grade 2
| ADDITION |
2.NBT.5
12
Written methods – addition to 99 with regrouping
Now that you have practiced regrouping
on place value boards, we are going to
apply this to a written strategy of
addition where you have to regroup.
Let’s look at 53 + 19. If we use longs
and shorts in columns, it looks like this.
Then, we regroup the tens and ones to
get the answer, 72.
Now look at the written method for
addition when regrouping:
e: 70
tens ones
1
+
5
3
1
9
7
2
tens
ones
+
First, estimate the answer: 50 + 20 = 70.
You estimate by rounding to the nearest 10.
Add the ones: 3 + 9 = 12
Think of this as 1 ten and 2 ones.
Write the 2 in the ones column and put the 1 in the
tens column.
Now add the tens and write 7 in the tens column. Is our answer
reasonable? Yes, because it is close to our estimate.
3Try adding these 2 digit numbers using the written method. Start by
writing your estimate:
a
e:
b
e:
tens ones
+
3
8
2
9
c
e:
tens ones
+
4
9
2
7
tens ones
+
2
9
4
9
Continued on page 14.
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Grade 2
| ADDITION |
2.NBT.5
13
Written methods – addition to 99 with regrouping
Continued from page 13.
3Try adding these 2 digit numbers using the written method. Start by
writing your estimate:
d
e
e:
tens ones
+
g
4
4
1
7
+
h
+
1
8
4
9
4
3
tens ones
+
i
e:
tens ones
8
e:
tens ones
e:
4
f
e:
+
8
2
9
9
6
2
e:
tens ones
3
1
tens ones
+
1
9
5
9
4Solve these word problems using the written method:
aI drove 39 mi
on Thursday
and 58 mi on
Friday. How
far did I drive
altogether?
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e:
tens ones
+
3
9
5
8
Grade 2
| ADDITION |
bOur class sold e:
19 raffle tickets
during the first
week of sales
and 59 raffle
+
tickets during
the second
week. How
many were sold
altogether?
2.NBT.5, 2.OA.1
tens ones
1
9
5
9
14
Addition – adding 3-digit numbers, no regrouping
Once we know how to add 2-digit numbers we can also add 3-digit numbers.
124 + 113 =
124
?
1 hundred 2 tens 4 ones
+
113
+
1 hundred 1 ten 3 ones
2 hundreds 3 tens 7 ones
2 hundreds and 3 tens and 7 ones is 237.
124 + 113 = 237
1
Add the hundreds, tens, and ones separately to finish these facts.
132
a
132 + 212 =
b 241 + 146 =
+
212
241
324
+
163
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+
146
c 324 + 163 =
Grade 2
| ADDITION |
2.NBT.7
15
Addition – adding 3-digit numbers, no regrouping
We can write these problems vertically, too. This helps us to work with
the hundreds, tens, and ones separately.
H T O
4 + 2 = 6
We start with the ones.
onesones ones
Then we add the tens.
Then we add the hundreds.
3 + 5 =
8
2 + 1 =
3
tenstens tens
2
3
4
+ 1
5
2
3
8
6
hundreds hundred hundreds
1
Finish these addition problems. Remember to start with the ones and
then add the tens.
a
H
T
O
1
4
+ 1
3
b
H
T
O
2
3
3
3
+ 2
1
c
H
T
O
3
1
8
6
4
+ 7
1
2
2
Draw lines to match the problems with their sets of blocks.
H
T
O
2
+ 3
5
1
3
4
3
1
4
H
T
O
2
+ 2
4
6
2
8
2
3
5
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+
+
Grade 2
| ADDITION |
2.NBT.7
16