The student will use numbers and number relationships to acquire basic facts and will compute with whole numbers less than 100.
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Use concrete models to develop understanding of multiplication as repeated addition and division as successive subtraction.
Solve two-digit addition and subtraction problems with and without regrouping using a variety of techniques.
Use strategies to estimation and solve sums and differences (e.g., compose, decompose and regroup numbers, use knowledge of 10 to estimate quantities and sums [two numbers less than 10 cannot add up to more than 20]).
Demonstrate fluency (i.e., memorize and apply) with basic addition facts to make a maximum sum of 18 and the associated subtraction facts (e.g., 15+3=18 and 18-3=15).