Multiplying and dividing together
Use multiplication facts to divide, and division to check multiplication.
Planned. This module is part of the plan and is not written yet.
Why it matters
If 6 bags hold 42 oranges between them, one times-table fact, 6 × 7 = 42, tells a trader there are 7 in each bag without opening them.
Draft outline · in review- For
- Level 3–4 · Primary 3 to Primary 4
- Inside
- 4 lessons and a test · about 45 minutes
- Topic
- Operations · core, 2 of 4
Inside the module.
4 lessons in order, about 45 minutes in all, then a short test. Learners go at their own pace; the minutes are a guide, not a timetable.
Draft outline · in review
Lesson 1: Undoing multiplication
See that 6 × 7 = 42 also tells you 42 ÷ 7 = 6 and 42 ÷ 6 = 7.
Explain10 min, from minute 0
Lesson 2: Dividing with times tables
Solve divisions by asking which multiplication fact fits.
Worked example10 min, from minute 10
Lesson 3: Missing numbers
Find the box in □ × 4 = 28 and 35 ÷ □ = 5.
Practice15 min, from minute 20
Lesson 4: Review
Mixed multiplication and division questions, with feedback on each.
Review10 min, from minute 35
End-of-module test
Use multiplication facts to solve divisions, and find missing numbers in multiplication and division sentences.
Mastered at 85% or more. Retake it until you pass; nothing is lost, and each try gives feedback.
Already know it? A Challenge Test (planned) clears the whole module: 90% overall, no objective below 75%.
Last stageafter about 45 min
Practicalities
Draft outline · in reviewBuilt to run offline
Planned to run on the Lantern's own computer, with no internet needed.
Languages
Planned first in English; every module aims to reach all of the Lantern's languages.
Try a question.
One question from the module, as a learner would meet it. Have a go, then open the worked solution a step at a time.
Draft outline · in review
Find the missing number: □ × 6 = 54.
Work it out on paper first, then show the answer and mark it yourself.
Particulars
Where it sits
What a learner can do after it
- Use a multiplication fact to solve a division.
- Find a missing number in a multiplication or division.
Level
Level 3–4 · Primary 3 to Primary 4
Level mappings are approximate. A qualified teacher or lecturer in each country must check them before they appear in the app.
Difficulty for its level
2 of 4 · Core
Time
About 45 minutes
Alignments
- Aligned to Common Corefull · in review3.OA.B.6
Alignment in review until a qualified teacher or lecturer checks it. No exam body, university or vendor endorses us; learners still sit the real exam.
Challenge Test
Planned: a Challenge Test to prove you know it and skip it. Pass at 90% overall, with no objective below 75%.
The route here.
Everything this module builds on, drawn as a route from its foundations. Solid lanes must be mastered first, or cleared by a Challenge Test; dashed lanes are suggestions that never lock anything.
- MA-ARI-OPS-01Adding and subtractingMaths · Primary 1 to Primary 3 (Level 1–3) · Planned
- MA-ARI-OPS-02Multiplication as equal groupsMaths · Primary 2 to Primary 3 (Level 2–3) · Sample lesson in the demo Needs Adding and subtracting (required).Try the sample lesson: Multiplication as equal groups
- MA-ARI-OPS-03Division as sharing and groupingMaths · Primary 3 to Primary 4 (Level 3–4) · Planned Needs Multiplication as equal groups (required).
- MA-ARI-OPS-04Multiplying and dividing togetherMaths · Primary 3 to Primary 4 (Level 3–4) · Planned · the destination Needs Division as sharing and grouping (required).
Help light the room where this is learned.
Every route on this map starts in a classroom with 24 stations, a tutor that works offline and a facilitator upstairs. Four are planned and waiting for light.