3rd grade · Math · Unit 3 of 16
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).
New York State Learning Standards learning standard: NY-3.OA.2; NY-3.OA.3; NY-3.OA.6; NY-3.OA.7 · division as sharing into equal groups and as an unknown factor, sharing and grouping word problems, 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
Division in New York
In the New York State Learning Standards, this is unit 3 of 16 in 3rd grade Math, after Multiplication and before Fractions.
Gradelings describes a child's practice on this unit as Beginning, Approaching, Meeting or Exceeding (Four practice steps). That reflects practice, not a report-card mark: the teacher decides the mark.
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
Which number sentence matches the story?
6 stickers are shared equally onto 3 pages.
How many go on each page?
- 6 − 3
- 6 × 3
- 6 + 3
- 6 ÷ 3
6 ÷ 3
Hint: Sharing equally into groups is division: 6 things ÷ 3 groups.
Question 2
These 12 🌸 are in 4 equal rows. How many are in each row?
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3
Hint: 12 ÷ 4 = ? Count one row, or think 4 × ? = 12. 4 × 3 = 12.
Question 3
What is 10 ÷ 5?
10 ÷ 5 = ?
- 1
- 5
- 2
- 3
2
Hint: Think multiplication: 5 × ? = 10. Count by 5s to 10: 5, 10. That's 2 jumps.
Question 4
Ana puts 9 strawberries onto 3 plates, the same number on each. How many strawberries go on each plate?
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3
Hint: Share them out one at a time, like dealing cards, until they're all gone. Or think: 3 × ? = 9. 3 × 3 = 9.
Question 5
There are 25 flowers. Each vase gets 5. How many vases are needed?
🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼🌼- 5
- 4
- 6
- 7
5
Hint: Make groups of 5. Count by 5s up to 25: 5, 10, 15, 20, 25. That's 5 vases.
Question 6
What number goes in the box?
3 × = 15
- 4
- 5
- 12
- 6
5
Hint: Count by 3s until you reach 15: 3, 6, 9, 12, 15. How many 3s did you count?