Practice Set · Part 1
Fraction Division Problem Solving
Pick up where we left off
Where we left off
Our goal: With my small group, I can solve real-world problems by writing and solving fraction division equations — one step at a time, with support.
The big idea: The total is the dividend and the size of one group is the divisor, so total ÷ group size tells how many groups.
Model to copy — Example 1 · How many groups fit?
- Agent Torres has 2/3 gallon of dust. Each test uses 1/6 gallon. How many tests can she run?
- Find the total. It is the dividend: 2/3 gallon
- Find the size of one test. It is the divisor: 1/6 gallon
- Write the equation and solve it: 2/3 ÷ 1/6 = 2/3 × 6/1 = 12/3 = 4
- Check by multiplying back: 4 × 1/6 = 4/6 = 2/3
- She can run 4 tests.
Start here
You did these with your group. Now do them on your own — the model above is yours to copy.
- 1
Same stepsFinish what the group started. Use the model above, step for step.
Let's do one together: A ribbon is 3/4 yard long. Each bow uses 1/4 yard. How many bows can you make? What is the total? Is it the dividend or the divisor? (3/4 yard. It is the dividend.) How much ribbon does one bow use? (1/4 yard. It is the divisor.) Write the equation and solve it. (3/4 ÷ 1/4 = 3/4 × 4/1 = 12/4 = 3) Check: multiply your answer by 1/4. Do you get the total? (3 × 1/4 = 3/4. Yes.)My first step is ___ , because the problem asks for ___ .
Show your work - 2
Warm restartConvert 3 2/5 to an improper fraction.
- A6/5
- B15/5
- C17/5
- D32/5
- 3
Warm restartWhat is 2 1/2 ÷ 1/2?
- A1 1/4
- B2 1/4
- C4
- D5
- 4
Warm restartWhat is 1 1/2 ÷ 3/4?
- A1 1/8
- B2
- C3/4
- D9/8
Practice Set · Part 2
Fraction Division Problem Solving
Keep going
You answered these out loud. Now write them.
Answer, then say how you know — the reason is the part that counts.
- 5
Think it throughWhich equation matches the problem?
- A1/12 ÷ 5/6 = t
- B5/6 ÷ 1/12 = t
- C5/6 × 1/12 = t
- D5/6 + 1/12 = t
Why is that the answer?
I chose ___ because ___ .
- 6
Think it through5/6 ÷ 1/12 = ?
- A2
- B5/72
- C10
- D12
How do you know?
I chose ___ because ___ .
- 7
Think it throughIs 10 tests a reasonable answer?
- ANo — the answer should be less than 1
- BYes — each test uses far less than the total, so the answer should be well above 1
- CNo — you cannot divide fractions
- DYes — because 10 is a round number
Explain your thinking.
I chose ___ because ___ .
- 8
Back to the modelHow do you decide which value is the dividend and which is the divisor in a word problem?
The total amount is the ___ because it is being split into groups. The size of each group is the ___ because we are dividing by that amount.
Practice Set · Part 3
Fraction Division Problem Solving
Words and reasoning
Word bank · Banco de palabras
Use the words
Fill each blank with a word from the bank.
- A drawing or diagram that shows a math situation is a ___.
- A math sentence that says two amounts are equal, with an = sign, is an ___.
- The value that makes an equation true is the ___.
- Checking whether an answer makes sense for the problem is checking its ___.
Explain the thinking
- 9
Find the mistakeAnother student made this exact mistake in this lesson. Explain why it is wrong, then write what they should have done.
The mistake: A common mistake in Fraction Division Problem Solving is reversing which fraction is the dividend and which is the divisor when setting up the equation from a word problem. - 10
Say moreWhat clue in a word problem tells you to divide fractions instead of multiply?
The problem asked me to find ___, so I divided.
- 11
Change one numberGo back to Part 1 and pick one problem you already solved. Change one number in it, then solve your new version. Show every step.
If ___ changed to ___ , then ___ .
Show your work
Practice Set · Part 4
Fraction Division Problem Solving
Show what you know
Last check
These two come from Lesson 6.10. If they are shaky, that is the lesson to revisit — not this one.
- 12
Show what you knowQuick check — you've got this: A pipe is 3/4 meter long. Each connector piece is 3/8 meter. How many connectors fit on the pipe?
- A2
- B3/2
- C6
- D9/32
Explain your choice.
I know it is ___ because ___ .
- 13
From Lesson 6.10Quick check — you've got this: What is 2 2/3 ÷ 2/3?
- A1 7/9
- B2/3
- C4
- D8/3
- 14
From Lesson 6.10Check the answer: how long are 7 pieces of 3/4 foot?
- A3/4 foot
- B5 1/4 feet
- C5 3/4 feet
- D7 feet
Be honest — this tells your teacher what to do next
| I can… | Not yet | Getting there | Got it |
|---|---|---|---|
| I can solve real-world problems by writing and solving fraction division equations — one step at a time, with support. | |||
| I can explain why it works: The total is the dividend and the size of one group is the divisor… | |||
| I can talk through each step out loud using a sentence frame and the lesson's key words. |
One question I want to ask my group next time