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Understanding Addition

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Understanding Addition

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About these worksheets

These worksheets introduce students to the foundational concepts of addition. Activities include matching pictures to addition sentences, identifying number pairs that make 10, breaking apart two-digit numbers into tens and ones, and counting up and down within 20. Designed primarily for kindergarten and first grade, these resources help young learners connect visual representations to number sentences and build early number sense before moving on to traditional addition problems.

Search for a Worksheet - Skip Counting (10s 100s) worksheet

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Skip Counting (10s 100s)

2nbt2

Count forward by 10s and 100s starting from different numbers.
Spot the pattern in a number sequence and choose the next number.
Use place value to explain why the numbers change the way they do when you add 10 or 100.

Search for a Worksheet - Skip Counting (5s 10s 100s) worksheet

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Skip Counting (5s 10s 100s)

2nbt2

Count forward by 5s, 10s, and 100s to continue a number pattern.
Find the missing number in a skip-counting sequence.
Use what you know about place value to see how the digits change when you add 5, 10, or 100.
Recognize that skip counting lands on multiples of 5, 10, and 100.

Search for a Worksheet - Counting Up worksheet

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Counting Up

2nbt2

Count forward from a given number to find what comes next.
Continue a number sequence by adding the same amount each time.
Use patterns in ones, tens, and hundreds to keep counting without starting over.