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## skip counting

Students skip count or add to come to the total.

## friendly numbers

Students change one of the factors to make it an easier multiplication problem.

## partial products

Students break apart factors in addends allowing them to solve smaller problems.

## doubling & halving

Students double one factor while halving the other factor.

## breaking factors

Students break factors into smaller factors to create easier problems.

## expanded algorithm

Similar to partial products as students move to a more efficient way of writing their thinking.

## standard algorithm

Students work from right to left multiplying each part of each factor.