# Missing Addend Worksheets - Sums of 16-20

Here you go! Even more missing addend worksheets! These worksheets provide targeted yet differentiated practice for sums of 16 through 20. Each worksheet has one targeted sum and they have 12, 15, 24 or 30 problems per page. Every sum has one specific graphics theme – transportation, Lego superheros, under the sea, circus animals, and mice that love strawberries. Use for simply practicing facts (a great tutoring tool!), in leveled math centers, or as a math time filler.

30 worksheets, 6 for each sum.

CCSS  1.OA.6

### Missing Addend – Sums of 16 – Hot Air Balloon

Keep your feet on the ground and your head out of the clouds! You could get carried up, up, and away while finding each missing addend on this worksheet.
CCSS 1.OA.6

### Missing Addend – Sums of 16 – Cool Rocket

Shoot for the stars with this simple missing addends worksheet! Fill in each missing addend in these 12 problems. All problems have a sum of 16.
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### Missing Addend – Sums of 16 – Tugboat

While you're finding each missing addend, just keep tuggin' along! Don't give up! This worksheet only has 12 problems for you to solve.
CCSS 1.OA.6

### Missing Addend – Sums of 16 – Old-Fashioned Plane

You will be flyin' high as you fill in each missing addend. Just don't get carried away. There are only 15 problems, though I know you'd love to solve more!
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### Missing Addend – Sums of 16 – Delivery Truck

Just pulling in to deliver this missing addend worksheet with sums of 16. Sign your name and these 24 problems with sums of 16 are all yours!
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### Missing Addend – Sums of 16 – Passenger Train

Chugga, chugga, choo, choo! This train is goin' for a ride! Can you solve all 30 of these missing addend problems? Here's a clue - all sums are 16.
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### Missing Addend – Sums of 17 – Superman

He's a superman with super powers ... he's Superman! No, the superman is really YOU doing super human things like this missing addend worksheet!
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### Missing Addend – Sums of 17 – Ironman

Instead of creating your own special suit to save the world and think you're really something, put your hand to this rather insignificant missing addend worksheet! CCSS 1.OA.6

### Missing Addend – Sums of 17 – Captain America

Captain America is not the only one who can do great things! YOU can become a great math wiz. Just start small with this missing addend worksheet.
CCSS 1.OA.6

### Missing Addend – Sums of 17 – Spiderman

"Spiderman, Spiderman, does whatever a spider can" ... Little kid, little kid, do whatever math you can - especially this missing addend worksheet! 15 problems
CCSS 1.OA.6

### Missing Addend – Sums of 17 – The Hulk

Don't let the stress of doing these 24 missing addend problems turn you into something big and green and ugly! Power through these sums of 17.
CCSS 1.OA.6

### Missing Addends – Sums of 17 – Batman and Robin

"Come on, Robin, to the Bat Cave. There's not a moment to lose!" Come on, kiddo, to the table. There's not a moment to lose. There's 30 missing addends! CCSS 1.OA.6

### Missing Addend – Sums of 18 – Sea Green Sea Star

Be a shining star! Put all your effort into finding the missing addend in each of these 12 missing addend problems. They all have the same sum - 18.
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### Missing Addend – Sums of 18 – So Small Sea Horse

While you're working these 12 missing addend problems you'll have these curious little eyes (which, by the way, move in separate directions) looking on.
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### Missing Addend – Sums of 18 – Swimming Underwater!

Like this swimmer with snorkel and mask, you can breathe easy! Just bubble up with joy as you find each missing addend. 12 problems
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### Missing Addend – Sums of 18 – Seashell

Finding each missing addend in these 15 problems can be as fun as searching for seashells on the seashore - only you won't get all sandy!
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### Missing Addend – Sums of 18 – Just Keep Swimming

Just keep swimming along and following your school ... find each missing addend in these 24 problems with sums of 18 - a great way to practice addition facts!
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### Missing Addend – Sums of 18 – Yellow Submarine

We all live in a yellow submarine, ... well at least this little fella does ... and he's watching you find each missing addend! 30 problems.
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### Missing Addend – Sums of 19 – Balancing Elephant

Filling in each missing addend sure is a balancing act! Make sure each of these 12 sets of addends adds up to the sum of 19.
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### Missing Addend – Sums of 19 – Fun-Loving Seal

Bark! Bark! Barking and bouncing a ball ... that's what seals do. And they have fun while they're doing it, just like I'm sure you'll have while filling in each missing addend!
CCSS 1.OA.6

### Missing Addend – Sums of 19 – On the Ball Hippo

C'mon, get with it! Get "on the ball" and fill in these missing addends with sums of 19. The first or second addend is missing in these 12 problems.
CCSS 1.OA.6

### Missing Addend – Sums of 19 – Star of the Show

A lion sits on his star studded drum, but YOU are really the star of the show. Show us what you've got! Fill in each of these 15 missing addend problems.
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### Missing Addend – Sums of 19 – Monkey Mania!

Quit monkeying around! Get serious and get some serious smarts! Each missing addend problem in these 24 problems is sure to make you that much smarter.
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### Missing Addend – Sums of 19 – Under the Big Top

This missing addend worksheet with 30 problems and sums of 19 is only for the serious and undistracted. Why? There's a lot going on under the big top!
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### Missing Addend – Sums of 20 – Berry Pie

Just as this mouse wouldn't dare leave one single berry behind, so too, you wouldn't dare leave one single missing addend problem undone ... would you?
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### Missing Addend – Sums of 20 – My Berry!

This cute little guy is pretty selfish about his berry, just like I know you'll be about the 12 missing addend problems on this worksheet!
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### Missing Addend – Sums of 20 – Berry Preserves

Do you look forward to the sweetness of Grandma's homemade berry preserves? Well, I preserved each missing addend just for you! 12 sweet problems!
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### Missing Addend – Sums of 20 – Double Berries! Yum!

Just like I want to share this missing addend worksheet with you, this little mouse wants to share her berries, too! 15 yummy problems.
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### Missing Addend – Sums of 20 – Berry Box

Wouldn't you like to jump into this missing addend worksheet like this mouse has jumped into this basket of berries? Bring it on! 24 problems.
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### Missing Addend – Sums of 20 – Fresh Berries

Need a challenge? Try filling in these 30 missing addend problems with all the correct answers before the mice can eat the berries. Ready, set ... GO!
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