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First Grade
Two-digit Mental Addition
Worksheets for 1st grade
At the swimming pool – Addition and subtraction of tens
Practice on Two-digit Mental Addition
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Difficulty Level
Basic
Categories
Worksheets
Interactive
Grades
First Grade
Second Grade
Subjects
Two-digit Mental Addition
Two-digit Mental Subtraction
Two-digit Addition
Two-digit Subtraction
Adding Tens
Subtracting Tens
Addition Problems
Subtraction Problems
Addition Word Problems
Word Problems
Additional Practice
Interactive
Adding and subtracting 10s - No.1
Interactive
Adding and subtracting 10s - No.2
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Adding and subtracting 10s - No.3
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Adding and subtracting 10s - No.4
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Addition and subtraction up to 10 - Box of crayons No.1
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Flowers addition and subtraction to 11
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Addition and subtraction problems to 12
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Who has more? to 13
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