3rd grade · Math · Unit 4 of 13
Division
Sharing and grouping
What your child practices
Understanding division as sharing fairly and as making equal groups, and using multiplication facts to divide (3 × 4 = 12, so 12 ÷ 3 = 4).
Oregon State Standards learning standard: 3.OA.A.2; 3.OA.B.6; 3.OA.C.7 · division as sharing into equal groups and as an unknown factor, and dividing within 100
How we explain it
Children can open this short lesson before they practice.
- Dividing shares things equally or makes equal groups.
- Think of the multiplication fact that goes with it.
- Ask: what times the divisor makes the number?
Example: 20 ÷ 4 = ? What times 4 makes 20? 4 × 5 = 20. Answer: 5
Sample questions
A taste of this unit. In the app, questions change every time and get easier or harder to match your child.
Question 1
What number goes in the box?
3 × = 12
- 4
- 5
- 3
- 9
4
Hint: Count by 3s until you reach 12: 3, 6, 9, 12. How many 3s did you count?
Question 2
What is 12 ÷ 4?
12 ÷ 4 = ?
- 2
- 8
- 3
- 4
3
Hint: Think multiplication: 4 × ? = 12. Count by 4s to 12: 4, 8, 12. That's 3 jumps.
Question 3
What is 10 ÷ 2?
10 ÷ 2 = ?
answer box
5
Hint: Think multiplication: 2 × ? = 10. Count by 2s to 10: 2, 4, 6, 8, 10. That's 5 jumps.
Question 4
Kenji puts 25 strawberries onto 5 plates, the same number on each. How many strawberries go on each plate?
🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓🍓answer box
5
Hint: Share them out one at a time, like dealing cards, until they're all gone. Or think: 5 × ? = 25. 5 × 5 = 25.
Question 5
2 × 5 = 10. So what is 10 ÷ 2?
10 ÷ 2 = ?
- 2
- 6
- 5
- 4
5
Hint: Multiplying and dividing undo each other. 2 groups of 5 make 10, so 10 split into 2 groups is 5.
Question 6
These 8 🍎 are in 2 equal rows. How many are in each row?
🍎🍎🍎🍎🍎🍎🍎🍎answer box
4
Hint: 8 ÷ 2 = ? Count one row, or think 2 × ? = 8. 2 × 4 = 8.