Cogito
Grade 3 Math · Chapter 3 · Lesson 9
Multiplication and Division Fluency
Knowing them, not working them out.
10 problems · about 13 minutes · 3.OA.C.7
What this lesson teaches
The child recalls products of two one-digit numbers and the matching division facts.
- Fluent means you know it, not that you work it out fast.
- Every fact has a strategy behind it.
- Division facts come free with the multiplication ones.
Warm-Up Review
From earlier lessons. Loosen up before the new work.
2 problemsReview — Patterns in the Times Tables: Is 8 × 7 odd or even?
Answer Even
Why An even factor makes the product even.
Review — Missing Factors and Divisors: 7 × ? = 63
Answer 9
Why 7 × 9 = 63.
Warm Up
Straightforward practice. Get the method working first.
4 problems7 × 6 = ?
Answer 42
Why 7 × 6 = 42.
48 ÷ 6 = ?
Answer 8
Why 48 ÷ 6 = 8.
6 × 8 = ?
Answer 48
Why Double 24.
9 × 7 = ?
Answer 63
Why 70 − 7.
Build It Up
The same ideas with more to keep track of.
2 problems56 ÷ 8 = ?
Answer 7
Why What times 8 makes 56?
81 ÷ 9 = ?
Answer 9
Why A square number.
Stretch Yourself
Mixed problems. Work out what kind of question it is before you start.
2 problemsThe Grid: A grid has 9 rows of 8. How many squares?
Answer 72 squares
Why 9 × 8 = 72.
The Share: 63 sweets shared between 9 children. How many each?
Answer 7 sweets
Why 63 ÷ 9 = 7.