Dividing a Decimal by a Two-Digit Decimal (Part 1)

This lesson teaches how to divide a decimal by a 2-digit decimal by converting the divisor into a whole number. The process involves moving the decimal point in both the divisor and dividend, and understanding the equivalence of fractions. By multiplying both the numerator and denominator by the same number, the division problem is simplified to a fraction, which is then converted back to a division expression.

What is the first step in dividing a decimal by a two-digit decimal?

• Subtract the decimals

• Multiply both numbers by 10

• Convert the divisor into a whole number

• Convert the dividend into a whole number

Why do we move the decimal point in the dividend?

• To make the divisor smaller

• To simplify the division

• To match the change made to the divisor

• To make the dividend larger

How do you write the division problem as a fraction?

• By writing both numbers as whole numbers

• By writing the dividend as the numerator and the divisor as the denominator

• By writing the dividend as the denominator

• By writing the divisor as the numerator

What do you multiply both the numerator and denominator by to make the divisor a whole number?

• 100

• 1000

• 10

• 1

What is the equivalent division expression for 189 eighteenth?

• 18 / 189

• 189 / 18

• 0.18 / 1.89

• 1.89 / 0.18