This understanding involves determining how many equal groups are formed when the total quantity and the number in each group are known, representing the relationship as a division equation such as or a related multiplication equation . It applies to equal-group situations and arrays with whole-number totals within 100, while distinguishing the unknown number of groups from the group size and preparing for fluent multiplication and division fact reasoning.
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- Learn “Find a missing number of groups” with a detailed explanation of the concept
- Master “Find a missing number of groups” with unlimited, free practice problems
- Download (or modify) a free worksheet on Find a missing number of groups you can use at home or in class with practice problems that scaffold and explore “Find a missing number of groups” from different perspectives.
- Start working on adaptive units like “Division of Integers - Intro” or “Division of Integers - Practice” that introduce, teach, or practice “Find a missing number of groups” to maximize your learning.
Detailed Explanation: Find a missing number of groups
When you know the total number and the number in each equal group, you can find the number of groups by dividing.
Example: There are apples. Put apples in each bag. How many bags can be filled?
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The total is apples.
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Each group has apples.
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Write a division equation:
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Think: How many groups of make ? Count by threes:
There are groups.
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So,
You can check with multiplication:
The missing number is bags.
Learn by doing: Find a missing number of groups
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Practice with unlimited practice problems
Practice:
Division Cards Model - Deck and Hand Size to Player Count - No Remainder (1 Digit)
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Download/Modify Free Grade 2 'Find a missing number of groups' Worksheet
Print this free 'Find a missing number of groups' worksheet to practice this skill away from the computer. Click 'Modify' to easily customize this worksheet to your exact needs.
This Worksheet Includes:
- Division Cards Model - Deck and Hand Size to Player Count - No Remainder (1 Digit)
- Division Car Model - Total and Per Car to Car Count - No Remainder (1 Digit)
- Division Car Model - Total and Per Car to Car Count - No Remainder (2 Digit)
- Counting in Groups - Total to Picture and Count (Specific Image)
- Counting in Groups - Total to Picture Groups (Specific Image)
- Division by Skip Counting - Partial Picture Set to Quotient
- Division by Skip Counting - Full Picture Set to Quotient
- Division Foundations - Groups of 3 to Division Sentence
Units Teaching This Skill
These adaptive units introduce, teach, or reinforce this skill (Find a missing number of groups) through scaffolded problems that grow in difficulty as concepts are understood.