FREE Two Digit Number Strings Worksheet. Use for small groups, independent work, morning work, whole class, math centers, homework, or assessment. Use in conjunction with number line, break apart, and base 10 lessons.
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Add up to four two-digit numbers using strategies based on place value and properties of operations.
Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.