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
Subject Level: Addition
We have addition worksheets and activities for kindergarten and first grade at this time. All our materials for kindergarten go up to sums of 10. The first grade worksheets are missing addend worksheets for sums of 11-20. Kindergarten starts with adding with pictures and then children move on to adding with numbers. Our flash cards will be a great help. Spend the recommended 10 minutes per day using flash cards and before you know it you’ll be a pro!
Go to this page in our bookstore to look at some books about addition to further complement your lessons.
159 worksheets
CCSS K.OA.1, K.OA.2, K.OA.4, K.OA.5, and 1.OA.6
Go to this page to choose from all of the math resources on this site.
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
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
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
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
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 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
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
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! 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. 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. 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 – Pink-Toed Elephant
CCSS 1.OA.6
Missing Addends – Sums of 15 – Likable Lion
CCSS 1.OA.6
Missing Addends – Sums of 15 – Tame Tiger
CCSS 1.OA.6
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
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
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.
CCSS 1.OA.6
