Decimal Division and Powers of 10

This video tutorial teaches how to rewrite decimal division problems using powers of 10. It covers basic division vocabulary, explaining terms like dividend, divisor, and quotient. The tutorial demonstrates how multiplying by powers of 10 moves the decimal point, making it easier to handle division problems. By multiplying both the dividend and divisor by the same power of 10, the division problem can be rewritten without changing the answer. This method is particularly useful for making divisors whole numbers. An example using a division bracket illustrates the process.

What is the term for the number that is being divided in a division problem?

• Dividend

• Remainder

• Quotient

• Divisor

How does multiplying a number by a power of 10 affect its decimal point?

• It removes the decimal point.

• It moves the decimal point to the right.

• It moves the decimal point to the left.

• It adds a zero to the end of the number.

What is the result of multiplying 3.6 by 10?

• 360

• 36

• 3.6

• 0.36

How can you change a division problem without altering its answer using powers of 10?

• By adding zeros to the dividend.

• By multiplying both the dividend and divisor by the same power of 10.

• By dividing the dividend by a power of 10.

• By subtracting the divisor from the dividend.

What is the result of 14 divided by 2 after multiplying both by 10?

• 70

• 7

• 20

• 140

Why is it useful to make the divisor a whole number in decimal division?

• It helps in finding the remainder.

• It allows for easier subtraction.

• It makes the division easier to perform.

• It simplifies the multiplication process.

In the example of 16.56 divided by 2.3, what power of 10 is used to make the divisor a whole number?

• 1000

• 10

• 100

• 1

What is the rewritten form of 16.56 divided by 2.3 using powers of 10?

• 1.656 divided by 2.3

• 1656 divided by 230

• 16.56 divided by 23

• 165.6 divided by 23

What is the main benefit of using powers of 10 in decimal division?

• It changes the answer to a simpler form.

• It allows for easier multiplication.

• It simplifies the division process without changing the answer.

• It eliminates the need for a divisor.

What is the final step in rewriting a decimal division problem using powers of 10?

• Subtract the divisor from the dividend.

• Ensure the decimal point is moved the same amount in both numbers.

• Add zeros to the dividend.

• Divide the dividend by the divisor.