This is an 18 page unit full of printables to help your students build number sense and an understanding of place value. You will find activities to help build students knowledge of addends of 10. That concept builds by moving students to parts of 100. Then the worksheets move into adding and subtracting multiples of 10. All of these activities relate to the common core standards for mathematics and help students to become better at mental math.
Pay attention to where the equal sign is located in the worksheets. This is done intentionally to help students build a correct understanding of the equal sign and a sign that signals both sides should be equivalent. It will also better prepare them for algebra in future grades.
The 18 pages include:
* 5 pages of addends of 10
* 5 pages of addends of 100
* 5 pages of adding multiples of 10
* 3 pages of subtracting multiples of 10
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