Divide. four hundred forty eight divided by 16, 5 rows. First row: 20. Second row: 16, long division symbol with four hundred forty eight inside. Third row: minus three hundred twenty. In parentheses, 20 times 16. Horizontal line. Fourth row: one hundred twenty eight. Fifth row: blank. In parentheses, 5 times 16.
Activity 1
Find the value of . Show your thinking. Organize it so it can be followed by others.
(Pause for teacher directions.)
Describe Elena’s strategy for finding the value of .
Divide. four hundred forty eight divided by 16, 11 rows. First row: 28. Second row: 3. Third row: 5. Fourth row: 20. Fifth row: 16, long division symbol with four hundred forty eight inside. Sixth row: minus three hundred twenty. In parentheses, 20 times 16. Horizontal line. Seventh row: one hundred twenty eight. Eighth row: minus 80. In parentheses, 5 times 16. Horizontal line. Ninth row: 48. Tenth row: minus 48. In parentheses, 3 times 16. Horizontal line. Eleventh row: 0.
Activity 2
Use Elena’s strategy to complete solving these expressions.
1.
Divide. four hundred ninety two divided by 12, 6 rows. First row: 20. Second row: 20. Third row: 12, long division symbol with four hundred ninety two inside. Fourth row: minus two hundred forty. In parentheses, 20 times 12. Horizontal line. Fifth row: two hundred fifty two. Sixth row: minus two hundred forty. In parentheses, 20 times 12. Horizontal line.
2.
Divide. six hundred thirty divided by 15, 3 rows. First row: 40. Second row: 15, long division symbol with six hundred thirty inside. Third row: blank. In parentheses, 40 times 15.
