1.OA.D.8 Worksheets

CCSS.MATH.CONTENT.1.OA.D.8

:
"Determine the unknown whole number in an addition or subtraction equation relating three whole numbers."

These worksheets can help students practice this Common Core State Standards skill.

Worksheets

Addition Facts: 10
Worksheet
Addition Facts: 10
How many ways can you add up to ten? In this worksheet, kids practice making ten by filling in the missing number in each equation to make it equal ten.
1st grade
Math
Worksheet
Simple Arithmetic
Worksheet
Simple Arithmetic
Have a ball with this addition and subtraction worksheet! Kids fill in the missing numbers on each beach ball to make its statement true.
1st grade
Math
Worksheet
Math Lab Addition #3
Worksheet
Math Lab Addition #3
Here's one way to reinforce addition facts and basic math vocabulary. Your child can add up the numbers and fill in missing signs in these addition problems.
1st grade
Math
Worksheet
Math Lab Addition #5
Worksheet
Math Lab Addition #5
Your young learner can have a blast experimenting with addition facts in the Math Lab!
1st grade
Math
Worksheet
Addition Symbols Math Lab
Worksheet
Addition Symbols Math Lab
Your can experiment with addition facts here in the math lab. Can he write the missing addition symbols and complete the problems?
1st grade
Math
Worksheet
Math Lab Addition #2
Worksheet
Math Lab Addition #2
Not only can your child practice her math facts with numbers between 1 and 20, she'll also practice writing addition problems with the correct symbols.
1st grade
Math
Worksheet
Assessment: Adding Three Numbers
Worksheet
Assessment: Adding Three Numbers
Let's see those addition skills! Use this math assessment to check in on your students’ abilities to add three numbers by having them solve these problems.
1st grade
Math
Worksheet
Break the Numbers Down!
Worksheet
Break the Numbers Down!
Students learn to decompose numbers through this fun activity. After being given a number, young mathematicians come up with their own way to decompose the number into two different numbers.
1st grade
Math
Worksheet
Number Bonds All Around
Worksheet
Number Bonds All Around
Number bonds are a great way for your kids to explore the relationship between addition and subtraction. By filling in the missing numbers, students get experience with fact families.
1st grade
Math
Worksheet
Build Your Own Number Bond
Worksheet
Build Your Own Number Bond
It’s time for students to make their own number bonds! In this activity, students will be given number sentences to solve and represent using number bonds.
1st grade
Math
Worksheet
Pokeman Problems
Worksheet
Pokeman Problems
Use this unique Pokemon-themed worksheet to give kids fun practice solving word problems that involve subtracting multiples of ten!
1st grade
Math
Worksheet
Vocabulary Cards: Subtraction Strategies
Worksheet
Vocabulary Cards: Subtraction Strategies
Use these vocabulary cards with the EL Support Lesson Plan: Subtraction Strategies.
1st grade
Math
Worksheet

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