Students will practice finding the missing addend to make 10 using visual models and number bonds.
Ways to make 10: Addition pairs that combine to equal 10. These are important benchmark combinations for mental math.
We have 1 object
Count from 1 to 10: 2, 3, 4, 5, 6, 7, 8, 9, 10
From 1 to 10 is 9 more
1 + 9 = 10 ✓
1 + 9 = 10
• Missing addend: Find what number completes the equation
• Counting strategy: Count from known number to target
• Benchmark numbers: 10 is an important reference point
Students will use ten frames to visualize and complete addition equations that equal 10.
Ten frame: A visual tool with 10 spaces used to organize and represent numbers up to 10.
We have 2 objects in the ten frame
There are 8 empty spaces in the ten frame
2 + 8 = 10
2 + 8 = 10 ✓
2 + 8 = 10
• Ten frame strategy: Visual tool for making 10
• Part-whole relationship: Parts combine to make the whole
• Missing addend: Find what number completes the equation
Students will identify complementary numbers that add up to 10.
Complementary pairs: Number pairs that add up to 10 (1+9, 2+8, 3+7, 4+6, 5+5).
We have 3 objects
Count from 3 to 10: 4, 5, 6, 7, 8, 9, 10
From 3 to 10 is 7 more
3 + 7 = 10 ✓
3 + 7 = 10
• Complementary pairs: 3 and 7 are complements of 10
• Counting strategy: Count from known number to target
• Part-whole relationship: Parts combine to make the whole
Students will identify double facts and their relationship to making 10.
Double fact: A number added to itself (e.g., 5 + 5 = 10 is a double fact).
We have 5 objects in the ten frame
To fill the ten frame completely
5 + 5 = 10
5 + 5 is a double fact that equals 10
5 + 5 = 10
• Double fact: 5 + 5 is a double fact equal to 10
• Halves of 10: 5 is half of 10
• Visual recognition: Ten frame shows symmetry
Students will apply multiple strategies to find the missing addend.
Multiple strategies: Students can use counting, ten frames, or known facts to solve.
We have 6 objects
Count from 6 to 10: 7, 8, 9, 10
From 6 to 10 is 4 more
6 + 4 = 10 ✓
6 + 4 = 10
• Counting strategy: Count from known number to target
• Complementary pairs: 6 and 4 are complements of 10
• Multiple approaches: Various strategies can be used
-
Ways to Make 10Addition pairs that combine to equal 10 (0+10, 1+9, 2+8, 3+7, 4+6, 5+5)
-
Complementary PairsNumber pairs that add up to 10 (e.g., 3 and 7 are complements of 10)
-
Ten FrameA visual tool with 10 spaces used to organize and represent numbers
-
Benchmark NumberAn important reference number (like 10) that helps with calculations
-
Double FactA number added to itself (e.g., 5 + 5 = 10)
-
Memory Phrase"Pairs that make 10: 1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5."
-
Visual StrategyUse ten frames to see the relationships between numbers.
-
Practice PatternStart with easier pairs (1+9, 2+8) and work toward harder ones.
-
Check MethodAlways verify your answer by adding the two numbers together.