CCSS.MATH.CONTENT.1.OA.C : First Grade Math Worksheets
About 1.OA.C
Add and subtract within 20.
Below, you will find many printable and common core aligned worksheets for core standard 1.OA.C These worksheets are grade-appropriate for First Grade Math. We have many worksheets covering various aspects of this common core standard, 1.OA.C.5, 1.OA.C.6, and many more. Look for more worksheets by visiting the page for this grade and subject using the menu.
A brief description of the worksheets is on each of the worksheet widgets. Click on the images to view, download, or print them. All worksheets are free for individual and non-commercial use.
View the full list of topics for this grade and subject categorized by common core standards or in a traditional way.
Count on to add single digits using the number line.
Core Standard: 1.OA.C.5
Find the pattern, then complete the number pattern.
Core Standard: 1.OA.C.5
Feed the mouse some cheese and skip counts by 2's to help him reach back home!
Core Standard: 1.OA.C.5
Skip count by 2's to fill in the missing numbers.
Core Standard: 1.OA.C.5
Find the pattern and complete each number pattern.
Core Standard: 1.OA.C.5
Learn about Nickels and skip counting by 5's in this worksheet.
Core Standard: 1.OA.C.5
Skip count by 5's to fill in the missing numbers in this fun pirate themed worksheet.
Core Standard: 1.OA.C.5
Practice addition with these cute bugs.
Core Standard: 1.OA.C.5
Practice subtraction using pictures in this colorful sea creatures themed worksheet.
Core Standard: 1.OA.C.5
Have fun learning addition with friendly barn animals!
Core Standard: 1.OA.C.5
Learn and practice the subtraction concept with this picture subtraction worksheet.
Core Standard: 1.OA.C.5
Practice adding single digit numbers.
Core Standard: 1.OA.C.5
Match each set of pictures to its correct subtraction sentence.
Core Standard: 1.OA.C.5
Count on to add the numbers using the number line.
Core Standard: 1.OA.C.5
Practice subtraction ( up to 10 ) using the pictures.
Core Standard: 1.OA.C.5
Add pictures on the ten frames to find the sum.
Core Standard: 1.OA.C.5
Practice subtraction using the ten frames.
Core Standard: 1.OA.C.5
Practice subtraction with pictures.
Core Standard: 1.OA.C.5
Practice counting forward and backward to 100.
Core Standard: 1.OA.C.5
Count forward and backwards to complete each pattern.
Core Standard: 1.OA.C.5
Practice subtraction with pictures.
Core Standard: 1.OA.C.5
Write the numbers that come after the number written on each panda.
Core Standard: 1.OA.C.5
Fill in the before numbers (up to 30).
Core Standard: 1.OA.C.5
Fill in missing before and after numbers on the leaves (up to 30).
Core Standard: 1.OA.C.5
Fill in before and after numbers on the leaves (up to 100).
Core Standard: 1.OA.C.5
Fill in the after numbers ( up to 50 ).
Core Standard: 1.OA.C.5
Write the numbers that comes before each given number.
Core Standard: 1.OA.C.5
It getting hot now! Practice 2 digit + 1 digit addition in this summer time themed worksheet.
Core Standard: 1.OA.C.6
Practice addition and subtraction facts in this fun fall themed worksheet.
Core Standard: 1.OA.C.6
Practice addition and subtraction facts in this rain themed worksheet.
Core Standard: 1.OA.C.6
Practice addition and subtraction facts in this cute spring themed worksheet.
Core Standard: 1.OA.C.6
Practice subtraction using 8 and 9 from Monday to Thursday and take a timed test on Friday.
Core Standard: 1.OA.C.6
This is a set of five subtraction skill building worksheets.
Core Standard: 1.OA.C.6
This is a set of five worksheets. Practice subtraction using 4 and 5 from Monday to Thursday, then take a timed test on Friday.
Core Standard: 1.OA.C.6
Sharpen your basic subtraction facts. (Five worksheet set)
Core Standard: 1.OA.C.6
Practice subtraction using 0 and 1 from Monday to Thursday, then take a timed test on Friday.
Core Standard: 1.OA.C.6
Addition facts to 20: 1 digit + 1 digit addition.
Core Standard: 1.OA.C.6
Practice addition facts to 20. (Valentines theme)
Core Standard: 1.OA.C.6
Practice additing 2 digit + 1 digit with friendly and colorful sea animals.
Core Standard: 1.OA.C.6
Follow the rule ( add 0 ) to complete in and out table.
Core Standard: 1.OA.C.6
Addition facts to 20 : 1 digit + 1 digit addition.
Core Standard: 1.OA.C.6
Have fun practicing 2 digit + 1 digit in this delicious ice cream themed worksheet.
Core Standard: 1.OA.C.6
Find the balloon with the correct answer for Nathan.
Core Standard: 1.OA.C.6
Ready for bubbly bath time fun? Practice adding 1 digit + 1 digit.
Core Standard: 1.OA.C.6
Follow the subtraction rule to complete each function table.
Core Standard: 1.OA.C.6
Find the subtraction rule, then complete each input and output table.
Core Standard: 1.OA.C.6
Add one to the numbers to complete the table.
Core Standard: 1.OA.C.6
Follow the addition rule to complete the table.
Core Standard: 1.OA.C.6
Add 3 to the numbers to complete the table.
Core Standard: 1.OA.C.6
Follow the rule ( add 2) to complete the in and out table.
Core Standard: 1.OA.C.6
