Understanding Unitary Method and Money Distribution

What is the main reason for introducing the unitary method in this lesson?

• To simplify addition and subtraction

• To make calculations faster

• To provide an alternative to the model method

• To teach advanced mathematics

Initially, how many units of money do Tanisha and her sister each have?

• Three units each

• Four units each

• Two units each

• One unit each

After Tanisha spends $78, how does her sister's money compare to hers?

• Her sister has twice as much

• Her sister has three times as much

• They have the same amount

• Her sister has four times as much

What is the purpose of multiplying the sister's units by four?

• To increase her money

• To calculate the total money

• To make the units equal for comparison

• To decrease Tanisha's units

What is the total amount of money Tanisha and her sister have together after the calculations?

• $78

• $156

• $130

• $208