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Add Hundreds Color by Number — Sleepy Monster
Interactive worksheet with auto-grading, instant feedback, and printable PDF.
Grades 2–3MathInteractive · Printable
Aligned to2.NBT.B.72.NBT.B.8
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2 Common Core standards
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About this worksheet
3-Digit Addition by 100's Color by Number rewards every correct answer with another piece of a hidden picture. Students solve each problem, match the answer to the color key, and a hidden picture appears region by region. It builds mental addition of whole hundreds. Built for Grades 2–3 and aligned to 2.NBT.B.7, 2.NBT.B.8. It's no-prep and self-checking, perfect for centers, fast finishers, review days, or sub plans, with both a print-ready PDF and an interactive answer-key version in every download.
Curriculum
Common Core standards covered
2.NBT.B.7
Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
2.NBT.B.8
Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900.
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