In this Grade 5 lesson from enVision Mathematics Chapter 6, students learn how to divide decimals by a 2-digit whole number using partial quotients and area models. The lesson walks through setting up long division with decimal dividends, such as solving 84.8 ÷ 16, and connecting the process to real-world contexts like finding the width of a garden or the cost per item. Students also practice estimating quotients to verify that the decimal point is placed correctly in the answer.
Section 1
Dividing Decimals by Two-Digit Divisors
To divide a decimal by a whole number using the standard algorithm, place the decimal point in the quotient directly above the decimal point in the dividend.
Then, divide as you would with whole numbers.
Section 2
Spot the Error: Decimal Division
To validate a long division problem, check two critical points:
1) The decimal point in the quotient must be aligned directly above the decimal point in the dividend.
2) Each subtraction step within the algorithm must be calculated correctly.
Expand to review the lesson summary and core properties.
Section 1
Dividing Decimals by Two-Digit Divisors
To divide a decimal by a whole number using the standard algorithm, place the decimal point in the quotient directly above the decimal point in the dividend.
Then, divide as you would with whole numbers.
Section 2
Spot the Error: Decimal Division
To validate a long division problem, check two critical points:
1) The decimal point in the quotient must be aligned directly above the decimal point in the dividend.
2) Each subtraction step within the algorithm must be calculated correctly.