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Math lesson plan · 3rd grade (Year 4 in England) · 60 minutes

Choose the operation for a word problem

Multiplication and division

CCSS 3.OA.A.3CCSS 3.OA.D.8England: Y3 Multiplication and division

Objective and success criteria

Students will: Choose the operation for a word problem.

  • I can answer questions on today's skill on my own, without help.
  • I can explain each step and say why it works.
  • I can check my answer and spot a mistake.

Before and after

Needs first: Multiplication and division word problems; Column addition and subtraction

Leads to: Two-step word problems using all four operations

Materials: Counters for arrays, Multiplication grid, Base-ten blocks, Mini whiteboards and pens, Printed student sheet (below).

Warm-up · 6 min

  • Quick retrieval from earlier learning (Multiplication and division word problems; Column addition and subtraction). Students answer on mini whiteboards.
  • Show answers together and note who needs support in the main task.
  1. A small theatre has 4 rows of seats with 12 seats in each row. How many seats are there? → 48Prompt: Equal rows: is this multiplication or division?
  2. Use column addition: 5722 + 3407 → 9129Prompt: Line up the digits by place value, ones under ones.
  3. Kwame has 25 photos to put in an album. Each page holds 5 photos. How many pages will Kwame fill? → 5Prompt: How many groups of the page size fit into the total?

Hook · 6 min

  • Show an array of chairs, eggs or windows and ask how many there are without counting one by one.
  • Share the objective: Choose the operation for a word problem. Read the success criteria together.

I do: model it · 12 min

  • Work through the example out loud, saying why you do each step, not just what you do.
  • Example: Which operation solves this? Omar has 54 oranges and gives away 9. How many are left?
  • Step 1: 54 − 9 = 45
  • Step 2: So you subtract; the answer is 45.
  • Step 3: subtract
  • Answer: subtract
  • Pause after each step and ask a student to say what comes next.

We do: guided practice · 12 min

  • Do these together. Students try each step on whiteboards before you reveal it.
  • Use the hints as prompts rather than giving the answer.
  1. Which operation solves this? Fatima has 72 oranges and puts them equally into 8 bags. How many in each bag? (multiply / divide / add / subtract) → dividePrompt: Are you joining, taking away, making equal groups or sharing?
  2. Mateo reads 7 pages every day for 7 days. Which number sentence gives the total pages? (49 ÷ 7 / 7 × 7 / 7 − 7 / 7 + 7) → 7 × 7Prompt: The same number of pages is read each day.

You do: independent practice · 17 min

  • Students work on the student sheet. Circulate and check the first two answers of every student early.
  • Students who finish: write a question of their own for a partner, with the answer.

The 8 questions are on the student sheet below, with answers in the key.

Exit ticket · 7 min

  • Two questions on their own. Sort answers into got it / nearly / not yet to plan the next lesson.
  1. Luis reads 7 pages every day for 8 days. Which number sentence gives the total pages? (7 − 8 / 8 + 7 / 56 ÷ 8 / 8 × 7) → 8 × 7Prompt: The same number of pages is read each day.
  2. Which operation solves this? Elena has 28 oranges and gives away 7. How many are left? (multiply / divide / add / subtract) → subtractPrompt: Are you joining, taking away, making equal groups or sharing?

Watch out for

  • Thinking multiplying always makes a number bigger.
  • Dropping a zero in long multiplication when moving to the tens row.

Support and stretch

Support

  • Review first: Multiplication and division word problems.
  • Use concrete materials: counters for arrays.
  • Give the first step of each question, or a partly worked example to finish.
  • Pair with a confident partner for the guided practice.

Stretch

  • Move on to: Two-step word problems using all four operations.
  • Explain a common mistake in writing and how to fix it.
  • Write a word problem that uses today's skill, then solve a partner's.

Homework and more practice

Free online practice with hints and printable worksheets for this skill: eurekami.com/math/grade-3.

Free lesson plan from eurekami.com/lesson-plan-builder

eurekami

Choose the operation for a word problem

Name

Date

Score/ 8

  1. Question 1

    Nia reads 4 pages every day for 8 days. Which number sentence gives the total pages?

    • A. 32 ÷ 8
    • B. 4 − 8
    • C. 8 + 4
    • D. 8 × 4
  2. Question 2

    Which operation solves this? Amara has 48 oranges and buys 8 more. How many now?

    • A. multiply
    • B. divide
    • C. add
    • D. subtract
  3. Question 3

    Jamal reads 9 pages every day for 3 days. Which number sentence gives the total pages?

    • A. 3 + 9
    • B. 27 ÷ 3
    • C. 9 − 3
    • D. 3 × 9
  4. Question 4

    Which operation solves this? Noah has 30 oranges and puts them equally into 6 bags. How many in each bag?

    • A. multiply
    • B. divide
    • C. add
    • D. subtract
  5. Question 5

    Ravi reads 9 pages every day for 6 days. Which number sentence gives the total pages?

    • A. 9 − 6
    • B. 6 + 9
    • C. 6 × 9
    • D. 54 ÷ 6
  6. Question 6

    Which operation solves this? Zoe has 81 oranges and gives away 9. How many are left?

    • A. multiply
    • B. divide
    • C. add
    • D. subtract
  7. Question 7

    Noah reads 8 pages every day for 8 days. Which number sentence gives the total pages?

    • A. 8 × 8
    • B. 64 ÷ 8
    • C. 8 − 8
    • D. 8 + 8
  8. Question 8

    Which operation solves this? Liam has 3 bags with 5 oranges in each. How many oranges?

    • A. multiply
    • B. divide
    • C. add
    • D. subtract

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Answer key: Choose the operation for a word problem

  1. 1. D. 8 × 4

  2. 2. C. add

  3. 3. D. 3 × 9

  4. 4. B. divide

  5. 5. C. 6 × 9

  6. 6. D. subtract

  7. 7. A. 8 × 8

  8. 8. A. multiply