6.11 · Part II
Supported Application · Guided Entry to Today's Problem
Fraction Division Problem Solving · Model
- Identify the Dividend (total amount being split or shared)
- Identify the Divisor (size of each group or part)
- Divide: Total ÷ Size = Number of Groups (or Total ÷ Groups = Size per Group)
- Fraction Division Problem Solving (Resolución de problemas de división de fracciones) — Use fraction division to find an unknown number of groups or the size of each group.
- Model (Modelo) — A picture or math way to show a problem so you can solve it.
- Equation (Ecuación) — A math sentence with an equal sign showing both sides are the same.
- Solution (Solución) — A number that makes the equation or inequality true.
- Reasonableness (Razonabilidad) — Checking if your answer makes sense.
- Inverse operations (Operaciones inversas) — Two math actions that undo each other, like × and ÷.
- 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. For example: a pitcher holds 3/4 cup of punch, and each serving is 1/8 cup — how many servings? The correct setup is total ÷ group size = 3/4 ÷ 1/8 = 3/4 × 8/1 = 24/4 = 6 servings. A student who reverses the setup calculates 1/8 ÷ 3/4 = 1/8 × 4/3 = 4/24 = 1/6, an answer smaller than 1 that can't possibly be a serving count. Before you submit, check: does my answer make sense as a NUMBER OF GROUPS? If the setup gives a fraction less than 1 for a 'how many' question, you likely swapped the dividend and divisor.
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1 MULTIPLE CHOICE
A board is 5/6 foot long. Each shelf bracket needs 1/6 foot. How many brackets fit?
- A5
- B1/36
- C6
- D5/36
Write any whole number over 1Keep · Change · FlipMultiply acrossSimplify · label the units- 1Whole over 13 becomes 3/1.
- 2KeepThe first fraction does not move.
- 3Change · Flip÷ becomes ×; flip the second fraction.
- 4CheckDividing by a piece smaller than 1 gives a BIGGER answer.
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2 MULTIPLE CHOICE
(Lesson 6.10) What is 1 1/2 ÷ 3/4?
- A2
- B1 1/8
- C3/4
- D9/8
✏️ Workspace & Solution Steps -
3 MULTIPLE CHOICE
(Lesson 6.10) Convert 3 2/5 to an improper fraction.
- A17/5
- B15/5
- C6/5
- D32/5
Rewrite each fractionWork it outSimplify- 1Same size piecesCommon denominator first.
- 2OperateOnly then add or subtract.
- 3SimplifyDivide out common factors.
Writing Task: Justify why your mathematical solution is accurate and complete.
6.11 · Part II
On-Level Application · Standard Rigor
Fraction Division Problem Solving · Model
- Identify the Dividend (total amount being split or shared)
- Identify the Divisor (size of each group or part)
- Divide: Total ÷ Size = Number of Groups (or Total ÷ Groups = Size per Group)
- Fraction Division Problem Solving (Resolución de problemas de división de fracciones) — Use fraction division to find an unknown number of groups or the size of each group.
- Model (Modelo) — A picture or math way to show a problem so you can solve it.
- Equation (Ecuación) — A math sentence with an equal sign showing both sides are the same.
- Solution (Solución) — A number that makes the equation or inequality true.
- Reasonableness (Razonabilidad) — Checking if your answer makes sense.
- Inverse operations (Operaciones inversas) — Two math actions that undo each other, like × and ÷.
- 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. For example: a pitcher holds 3/4 cup of punch, and each serving is 1/8 cup — how many servings? The correct setup is total ÷ group size = 3/4 ÷ 1/8 = 3/4 × 8/1 = 24/4 = 6 servings. A student who reverses the setup calculates 1/8 ÷ 3/4 = 1/8 × 4/3 = 4/24 = 1/6, an answer smaller than 1 that can't possibly be a serving count. Before you submit, check: does my answer make sense as a NUMBER OF GROUPS? If the setup gives a fraction less than 1 for a 'how many' question, you likely swapped the dividend and divisor.
-
1 MULTIPLE CHOICE
Marcus solved 2/3 ÷ 1/4 and got 8/3 = 2 2/3. He says 'That can't be right because I started with less than 1.' Is Marcus's math correct? Is his reasoning correct?
- AHis math is correct (2 2/3), but his reasoning is wrong — dividing by a small fraction gives a larger result
- BHis math and reasoning are both correct — the answer should be less than 1
- CHis math is wrong — the answer should be 1/6
- DHis math is wrong — the answer should be 8/12
✏️ Workspace & Solution Steps -
2 MULTIPLE CHOICE
Room 1 — Evidence Locker: Agent Torres has 7/8 pound of casting clay to lift footprints. Each cast uses 1/8 pound. How many casts can she make to unlock the door?
- A7
- B6
- C8
- D1/7
Rewrite each fractionWork it outSimplify -
3 MULTIPLE CHOICE
Room 2 — Surveillance Map: A suspect's trail is 5/6 of a mile. Hidden checkpoints are spaced every 1/6 of a mile. How many checkpoints are on the trail?
- A5
- B6
- C1/5
- D4
Rewrite each fractionWork it outSimplify
Writing Task: Justify why your mathematical solution is accurate and complete.
6.11 · Part II
Extension & Non-Routine Application
Fraction Division Problem Solving · Model
- Identify the Dividend (total amount being split or shared)
- Identify the Divisor (size of each group or part)
- Divide: Total ÷ Size = Number of Groups (or Total ÷ Groups = Size per Group)
- Fraction Division Problem Solving (Resolución de problemas de división de fracciones) — Use fraction division to find an unknown number of groups or the size of each group.
- Model (Modelo) — A picture or math way to show a problem so you can solve it.
- Equation (Ecuación) — A math sentence with an equal sign showing both sides are the same.
- Solution (Solución) — A number that makes the equation or inequality true.
- Reasonableness (Razonabilidad) — Checking if your answer makes sense.
- Inverse operations (Operaciones inversas) — Two math actions that undo each other, like × and ÷.
- 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. For example: a pitcher holds 3/4 cup of punch, and each serving is 1/8 cup — how many servings? The correct setup is total ÷ group size = 3/4 ÷ 1/8 = 3/4 × 8/1 = 24/4 = 6 servings. A student who reverses the setup calculates 1/8 ÷ 3/4 = 1/8 × 4/3 = 4/24 = 1/6, an answer smaller than 1 that can't possibly be a serving count. Before you submit, check: does my answer make sense as a NUMBER OF GROUPS? If the setup gives a fraction less than 1 for a 'how many' question, you likely swapped the dividend and divisor.
-
1 MULTIPLE CHOICE
A ribbon is 4 1/2 feet long. Marta cuts the whole ribbon into pieces that are each 3/4 foot long. How many pieces does she get?
- A6 pieces
- B3 3/8 pieces
- C1/6 of a piece
- D5 1/4 pieces
✏️ Workspace & Solution Steps
Writing Task: Justify why your mathematical solution is accurate and complete.