How do you teach first graders to add double-digit numbers?

Start with adding a two-digit number and a one-digit number, then progress to two two-digit numbers. Use place value understanding: add the tens first, then the ones. Base-ten blocks and place value worksheets make this concrete before moving to abstract equations.

What are addition strategies for first grade?

Key strategies include counting on from the larger number, making a ten (e.g., 8+5 becomes 8+2+3), using doubles (6+6=12) and near-doubles (6+7=6+6+1), and decomposing to known facts. Worksheets that practice each strategy separately help students build fluency.

1st Grade Adding doubles minus 1 Worksheets

Ages 6-7 · Free previews · Print-ready PDFs

Written by Adi Ackerman, Head Teacher

Free printable adding doubles minus 1 worksheets for 1st grade students (Ages 6-7). All worksheets are aligned to Common Core standards and ready to print.

1st Grade Math Addition Adding doubles minus 1 Clear All

$Adding doubles minus 1 - 1st Grade Addition worksheet preview$

Adding doubles minus 1

Grade1st Grade

TopicAddition

More addition worksheets

Explore all of our 1st grade addition worksheets, covering adding with pictures (sums to 10), vertical addition with objects, addition sentences, adding with pictures (sums to 20), and more.

Adding with pictures (sums to 10)Vertical addition with objects Addition sentences Adding with pictures (sums to 20)Adding with number lines Addition sentences and number lines Adding 3 numbers with number lines Add two numbers - sum 10 or less Add two 1-digit numbers - sum 20 or less Number bonds - sums with 8 Number bonds - sums with 9 Number bonds - sums with 10 Adding using combinations of 10 Adding doubles Adding doubles plus 1 Adding doubles plus 2 Adding doubles and near doubles Missing addends - sum 10 or less Missing addends - sum 20 or less Add 3 numbers Add whole tens Add whole tens - missing addend Complete the next ten Add 2-digit and 1-digit numbers within the same ten Add 2-digit and 1-digit numbers in columns - no carrying Add two 2-digit numbers in columns - no carrying Add a 2-digit and a 1-digit number in columns - missing addend Add two 2-digit numbers in columns - missing addend Addition facts Two-digit addition Addition

Frequently Asked Questions

By the end of first grade, students should fluently add within 10 (CCSS 1.OA.C.6) and solve addition problems within 20 using strategies like counting on, making ten, and decomposing numbers. They should also add within 100 using place value understanding (1.NBT.C.4).

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