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Parent guide · Grade 3 Math · Unit 4

Lesson 4.2 Multiplication and Division Families

Written for the parent. Read the Say this lines aloud as they are, or in your own words. Answers for you are marked Listen for.

At a glance

Time
5 sessions of 25–30 minutes
Goal
Write fact families with × and ÷.
You need
  • Counters (dried beans, buttons or pebbles)
  • A few cups
  • Pencil and crayons
Print
Worksheet A · Worksheet B · the lesson page

Steps

  1. Do this: Ask these out loud. Your child answers out loud; no paper needed.

    • Ask: “6 × 4” Listen for: 24
    • Ask: “3 × 9” Listen for: 27
    • Ask: “10 × 6” Listen for: 60
    • Ask: “5 × 2” Listen for: 10
    • Ask: “2 × 1” Listen for: 2

  2. Say this: “3 × 6 = 18, 6 × 3 = 18, 18 ÷ 3 = 6, 18 ÷ 6 = 3.”

    Say this: “Division undoes multiplication.”

    Say this: “Fact family: related facts made from the same three numbers.”

  3. Show: Find the missing number: ___ ÷ 9 = 9

    Say this: “Think multiplication: 9 × 9 = 81”

    Say this: “Check: 81 ÷ 9 = 9”

    Answer: 81

    Show: 8 ÷ 2 = ___

    Say this: “Think multiplication: 2 × ___ = 8”

    Say this: “2 × 4 = 8”

    Answer: 4

  4. Do this: Your child does these with you. Let them try first; help only after a real try.

    Ask: Write the fact family for 8, 4 and 32.

    Listen for: 8 × 4 = 32; 4 × 8 = 32; 32 ÷ 8 = 4; 32 ÷ 4 = 8

    If stuck: 8 × 4 = 32

    Ask: Write the fact family for 4, 9 and 36.

    Listen for: 4 × 9 = 36; 9 × 4 = 36; 36 ÷ 4 = 9; 36 ÷ 9 = 4

    If stuck: 4 × 9 = 36

    Ask: Write the fact family for 5, 3 and 15.

    Listen for: 5 × 3 = 15; 3 × 5 = 15; 15 ÷ 5 = 3; 15 ÷ 3 = 5

    If stuck: 5 × 3 = 15

    7 more practice items on the lesson page, and on Worksheet A and Worksheet B.

    • Dividing the small number by the big one.

  6. Count out 12 to 40 beans and a number of cups. Share the beans equally. Say the division fact and the matching multiplication fact.

  7. Say this: “Tell me what you learned today. Show me with your hands or the counters if you like.”

    Listen for: Write fact families with × and ÷.

  8. Say the multiplication facts of 2, 3, 4, 5 and 10 as division facts.

Spread over the week

5 sessions of 25–30 minutes. Stop while it is still going well.

  1. Session 1. Warm-up, then teach the new idea (steps 1 and 2).
  2. Session 2. Warm-up again, then show how with the examples.
  3. Session 3. Practice together, then play the game.
  4. Session 4. More practice on the worksheet, and the daily habit.
  5. Session 5. Quick check: narration and a few practice items. Move on when it is mostly right.