1st grade · Math · Unit 11 of 14
One Half
Share fairly and find one half!
What your child practices
One half means 1 of 2 equal parts. Children share items fairly between two people and see that two halves make a whole.
Minnesota K-12 Academic Standards benchmark: 1.3.5.12 · sharing a whole equally between two groups and naming halves
How we explain it
Children can open this short lesson before they practice.
- Half means two equal parts.
- Both parts must be the same size.
- Half of a number is shared by 2 fairly.
Example: What is half of 8? Share 8 between 2. Each gets 4. Answer: 4
One Half in Minnesota
In the Minnesota K-12 Academic Standards, this is unit 11 of 14 in 1st grade Math, after Count It Up and before Coins & Cents.
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
11 cookies are shared by 2 friends. How many are left over?
🍪🍪🍪🍪🍪🍪🍪🍪🍪🍪🍪- 2
- 1
- 0
1
Hint: Make 2 equal groups. One cookie cannot be shared fairly.
Question 2
What is half of 20?
- 9
- 8
- 10
10
Hint: Half of 20 is the number you get when you split 20 into 2 equal groups.
Question 3
Is this a fair way to cut a pizza in half?
🍕- Two equal parts
- One big part and one tiny part
- Three parts
Two equal parts
Hint: Halves must be the same size.
Question 4
Cut a sandwich into 2 equal parts. Each part is one…
🥪- double
- half
- whole
half
Hint: Two equal parts are called halves. Each one is a half.
Question 5
6 ⚽ are shared fairly by 2 friends. How many each?
⚽⚽⚽⚽⚽⚽- 9
- 3
- 8
3
Hint: Make 2 equal groups. Deal them out one at a time.
Question 6
Two friends share a pizza fairly. How many equal parts?
🍕- 1
- 2
- 5
2
Hint: Sharing between 2 means 2 equal parts.