Lesson 10: Practice Problems

Problem 1

Kiran is using long division to find .

long division problem, 696 divided by 12.

He starts by dividing 69 by 12. In which decimal place should Kiran place the first digit of the quotient (5)?

  1. Hundreds

  2. Tens

  3. Ones

  4. Tenths

Problem 2

Here is a long-division calculation of .

A long division solution 917 divided by 7

  1. There is a 7 under the 9 of 917. What does this 7 represent?

  2. What does the subtraction of 7 from 9 mean?

  3. Why is a 1 written next to the 2 from ?

Problem 3

Han’s calculation of is shown here.

A long division solution for 972 divided by 9

  1. Find .

  2. Use your calculation of to explain how you know Han has made a mistake.

  3. Identify and correct Han’s mistake.

Problem 4

Find each quotient.

  1. long division problem, 465 divided by 5.
  2. long division problem, 924 divided by 12.
  3. long division problem, 1107 divided by 3.

Problem 5 From Unit 5 Lesson 7

One ounce of a yogurt contains of 1.2 grams of sugar. How many grams of sugar are in 14.25 ounces of yogurt?

  1. 0.171 grams

  2. 1.71 grams

  3. 17.1 grams

  4. 171 grams

Problem 6 From Unit 5 Lesson 4

The mass of one coin is 16.718 grams. The mass of a second coin is 27.22 grams. How much greater is the mass of the second coin than the first? Show your reasoning.