Estimating and Adjusting Quotients in Division

This video tutorial teaches how to divide using estimation and adjustment techniques. It begins with a review of multiplication and division as inverse operations, then demonstrates breaking down complex problems into smaller parts for easier calculation. The SMART rounding technique is introduced to make division more efficient. Practical examples, such as dividing stamps among students, illustrate these methods in action.

What are multiplication and division considered in relation to each other?

• Unrelated operations

• Complementary operations

• Inverse operations

• Identical operations

What is a common mistake students make when starting division problems?

• Ignoring the divisor

• Starting with very small numbers

• Multiplying instead of dividing

• Using very large numbers

What is the purpose of SMART rounding in division?

• To make numbers more complex

• To simplify numbers for easier calculation

• To decrease the dividend

• To increase the divisor

In the example of 2860 / 13, what was the SMART estimate?

• 150

• 250

• 200

• 300

How many stamps does each student get if there are 1716 stamps for 16 students?

• 107

• 105

• 115

• 110

What is the first step in solving 1716 / 16 using estimation?

• Subtract 16 from 1716

• SMART round 1716 to 1600

• Multiply 16 by 100

• Divide 1716 by 10

What is the final quotient when dividing 1716 by 16 using estimation and adjustment?

• 115

• 110

• 107

• 105