Missing Addends - Sums of 11-15

There are a slew of missing addends worksheets in this section! In each worksheet children will fill in the missing addend for one particular sum. This targets specific addition facts and strengthens skills for each sum. Start with sums of 11 and work up to sums of 15. Each sum comes in a different theme – pirates, insects, woodland animals, monsters, and zoo animals. Each sum hasĀ 12, 15, 24 or 30 problems per page for differentiated learners.

30 worksheets, 6 for each sum.

CCSS 1.OA.6

Please go to this page to see more first grade addition worksheets.

missing addends - sums of 11 - happy pirate

Missing Addends – Sums of 11 – Happy Pirate

Waving hello is this happy mate who wants to help fill in the missing addends! Once you've got the tens down you are on your way to mastering sums of 11.
CCSS 1.OA.6

missing addends - sums of 11 - girlie priate

Missing Addends – Sums of 11 – Girlie Pirate

If you've never seen a true girlie pirate, well now you have. With telescope in hand she's keeping her eye on you ... making sure you fill in the missing addends.
CCSS 1.OA.6

missing addends - sums of 11 - rough and tough pirate

Missing Addends – Sums of 11 – Rough and Tough Pirate

With eye patch, pirate hat, and torn pants, this pirate is ready to get rough and tough with you - helping you with missing addends with sums of 11!
CCSS 1.OA.6

missing addends - sums to 11 - smiling pirate

Missing Addends – Sums of 11 – Smiling Pirate

This smiling swash buckling sweetie has come with 15 missing addends problems with sums of 11. So get to it ... or she'll steal your buried treasure! AYE!
CCSS 1.OA.6

missing addends - sums of 11 - pirate ship

Missing Addends – Sums of 11 – Pirate Ship

The black flag tells it all! It's a pirate ship for sure. She's out on the high seas all alone quite innocently bringing you 24 missing addends with sums of 11.
CCSS 1.OA.6

missing addends - sums of 11 - x marks the spot

Missing Addends – Sums of 11 – X Marks the Spot!

X marks the spot! The buried treasure has been found! Aye matey, and you can make your own treasures by memorizing all the missing addends on this page.
CCSS 1.OA.6

missing addends - sums of 12 - buzzy bee

Missing Addends – Sums of 12 – Buzzy Bee

This busy bee is buzzing by keeping you as busy as he is. He'll be pollinating the flowers and you'll be filling in these 12 missing addends!
CCSS 1.OA.6

missing addends - sums of 12 - beautiful lbutterfly

Missing Addends – Sums of 12 – Beautiful Butterfly

If you like purple, you're in luck! This beautiful butterfly is dropping in to see how you're doing with filling in missing addends.
CCSS 1.OA.6

missing addends - sums of 12 - cutie caterpilar

Missing Addends – Sums of 12 – Cutie Caterpillar

Just crawling along to spy on you, this cute little caterpillar has lots of hope that you'll make him happy as you fill in these missing addends with sums of 12.
CCSS 1.OA.6

missing addends - sums of 12 - dizzy dragonfly

Missing Addends – Sums of 12 – Dizzy Dragonfly

This dizzy dragonfly looks really silly and confused, but you're mind is going to be crystal clear as you work on these 15 missing addends problems!
CCSS 1.OA.6

missing addends - sums of 12 - giant grasshopper

Missing Addends – Sums of 12 – Giant Grasshopper

Did you see that thing hop? It was this giant grasshopper who just hopped onto this missing addends worksheet!
CCSS 1.OA.6

missing addends - sums of 12 - lovely ladybugs

Missing Addends – Sums of 12 – Lovely Ladybugs

Lovely indeed! These ladybugs have it all, curly antennae, large black spots, and big eyes that will watch you until you finish all 30 missing addends.
CCSS 1.OA.6

missing addends - sums of 13 - sweet bunny

Missing Addends – Sums of 13 – Sweet Bunny

Hoppity, Hop! Hop! This sweet bunny will wiggle his nose as you wiggle your pencil to fill in these missing addends with sums of 13 worksheet! 12 problems.
CCSS 1.OA.6

missing addends - sums of 13 - dreaming deer

Missing Addends – Sums of 13 – Dreaming Deer

A sweet little deer looking so content and dreaming of frolicking in the forest. I'll bet you dream about filling in missing addends ... especially for sums of 13.
CCSS 1.OA.6

missing addends - sums of 13 - fine fox

Missing Addends – Sums of 13 – Fine Fox

This fine little fox is sitting up pretty and taking notice of you! He's gonna watch as you carefully figure out all twelve missing addends and write them neatly.
CCSS 1.OA.6

missing-addends - sums of 13 - hairy hedgehog

Missing Addends – Sums of 13 – Hairy Hedgehog

Get a brush and help this little guy out! He needs some better grooming habits. But wait! Fill in these 15 missing addends first. Work before play ... : )
CCSS 1.OA.6

missing addends - sums of 13 - big-eyed owl

Missing Addends – Sums of 13 – Big Eyed Owl

This little fella couldn't find any mice to eat for lunch so he decided to perch on this page and watch you fill in these 24 missing addends! Whoo! Whoo!
CCSS 1.OA.6

missing addends - sums of 13- snacking squirrel

Missing Addends – Sums of 13 – Snacking Squirrel

This little squirrel won't pay you any mind, so don't worry about him. He'll keep snacking while you fill in these missing addends!
CCSS 1.OA.6

missing addends - sums of 14 - googly-eyed monster

Missing Addends – Sums of 14 – Googly-Eyed Monster

Monsters are known for being scary. Math can feel the same way. But this monster is not scary. Neither are these12 missing addends!
CCSS 1.OA.6

missing addends - sums of 14 - one-eyed monster

Missing Addends – Sums of 14 – One-Eyed Monster

This isn't a missing addends worksheet! It's got a tennis ball on it! See the round green ball? It's about sports. Now, now ... enough excuses. Time for math!
CCSS 1.OA.6

missing addends - sums of 14 - candy corn monster

Missing Addends – Sums of 14 – Candy Corn Monster

It's not Halloween, but this fella looks like a candy corn to me! No matter what time of year ... this still looks like a missing addends worksheet! 12 problems.
CCSS 1.OA.6

missing addends - sums of 14 - furry monster

Missing Addends – Sums of 14 – Furry Monster

A pink furry monster comes to you with a friendly three-toothed smile to show you how fun it can be to solve these 15 missing addends problems!
CCSS 1.OA.6

missing addends - sums of 14 - stripey horned monster

Missing Addends – Sums of 14 – Stripey Horned Monster

Missing addends and monster fun sure seem to go together! With big wide eyes, this stripey horned fella is going gaga over sums of 14!
CCSS 1.OA.6

missing addends - sums of 14 - monster buddies

Missing Addends – Sums of 14 – Monster Buddies

Hand in hand they come to you and as good buddies encourage each other, these monsters will support you as you finish all 30 missing addends problems.
CCSS 1.OA.6

missing addends - sums of 15 - joyous giraffe

Missing Addends – Sums of 15 – Joyous Giraffe

Can't stop smiling when you see this cute lil' darlin' looking at you! And you won't be able to stop smilin' when you breeze through these missing addends!
CCSS 1.OA.6

missing addends - sums of 15 - pink-toed elephant

Missing Addends – Sums of 15 – Pink-Toed Elephant

On pink tippie-toes, this elephant looks a bit stressed ... but you can take a big breath and relax. This missing addends page is low key with only 12 problems.
CCSS 1.OA.6

missing addends - sums of 15 - likable lion

Missing Addends – Sums of 15 – Likable Lion

While you're filling in the missing addends go ahead and reach your hand out to pet this likable lion. He's cute and sweet! 12 problems, both addends missing.
CCSS 1.OA.6

missing addends - sums of 15 - tame tiger

Missing Addends – Sums of 15 – Tame Tiger

I know you're going to be busy filling in the 15 missing addends on this page, but this tame fella wants to rub up against you. Can you hear this big cat purr?
CCSS 1.OA.6

missing addends - sums of 15 - double trouble

Missing Addends – Sums of 15 – Double Trouble

Yes, you're seeing double! There are 24 missing addends problems instead of 12 like the three pages above. Double the practice, double the fun!
CCSS 1.OA.6

missing addends - sums of 15 - stripes and smiles

Missing Addends – Sums of 15 – Stripes and Smiles

With sums of 15, these 30 missing addends problems will make you smarter than smart! This zebra is in the right place with his 15 stripes!
CCSS 1.OA.6