Resources/Number bonds practice: make 10
K to Grade 1•Printable worksheet + answer key•CC0 license

Number bonds practice: make 10

A printable lesson focused on composing and decomposing numbers within 10.

Students learn how numbers can be made from two parts and use number bonds to support addition and subtraction.

Print-ready worksheet with answer key and quick teaching tips.

K to Grade 10 problems10 minAnswer key included
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Ready-to-teach

Clear steps, examples, and practice in one printable page.

Misconception-proof

Highlights common mistakes and how to fix them quickly.

Open license

CC0: free to copy, adapt, and share without attribution.

Quick overview

This free number bonds worksheet for kindergarten and grade 1 helps students make 10 and decompose numbers.

Lesson plan snapshot

10-15 min
  • Warm-up (2 min): build 10 with counters.
  • Model (3 min): solve the worked example together.
  • Guided practice (4 min): complete problems 1-3 as a group.
  • Independent practice (5 min): finish the remaining problems.

Materials: ten frame, counters

Learning targets

  • Break numbers into two parts.
  • Find missing addends to make 10.
  • Use number bonds to solve simple equations.

Step-by-step approach

  1. 1Start with a whole number (like 10).
  2. 2Split it into two parts (like 6 and 4).
  3. 3Check that the parts add to the whole.
  4. 4Use the bond to solve addition and subtraction.

Common mistakes

Mistake

Using three parts instead of two.

Try instead

Number bonds use exactly two parts that add to the whole.

Mistake

Forgetting the whole number.

Try instead

Write the whole at the top and check the sum.

Mistake

Swapping the whole with a part.

Try instead

The whole is the largest number in the bond.

Worked example

Guided
Make 10 with a missing part: 10 = 6 + __
  1. Think: what plus 6 equals 10?
  2. 6 + 4 = 10, so the missing part is 4.
Answer: 4

Related resources

Counting

Count, compare, and write numbers to 20.

View resource

Addition & subtraction

Fluency within 20 with visual strategies.

View resource

Skip counting

Count by 2s, 5s, and 10s.

View resource

Practice problems

10 problems • 15 min

Printable worksheet
  1. 1
    Complete the number bond: ___ + 8 = 24
  2. 2
    There are 10 balloons. 7 are red. How many are not red?
  3. 3
    Complete the number bond: ___ + 6 = 18
  4. 4
    Complete the doubles bond: 2 + 2 = ___
  5. 5
    Complete the number bond: ___ + 9 = 12
  6. 6
    If the whole is 15 and one part is 3, what is the other part?
  7. 7
    9 + 10 = ___
  8. 8
    Complete the doubles bond: 6 + 6 = ___
  9. 9
    Complete the number bond: 2 + ___ = 10
  10. 10
    How many more to make 5? 0 + ___ = 5

Answer key

10 answers
  1. 11) 16
  2. 22) 3
  3. 33) 12
  4. 44) 4
  5. 55) 3
  6. 66) 12
  7. 77) 19
  8. 88) 12
  9. 99) 8
  10. 1010) 5

Teacher tips

  • TUse ten frames and counters to show number bonds.
  • TAsk students to explain their two parts out loud.
  • TConnect bonds to facts families for addition and subtraction.

Parent tips

  • PUse fingers to make 10 in different ways.
  • PPlay quick games: “Make 10 with 6.”
  • PCelebrate any pair that adds to the whole.

Open license

You are free to copy, adapt, and share these materials. No attribution required. Released under Creative Commons CC0 1.0 (public domain).