Lesson 3 of 8 · Grade 1
Number bonds to 10
A number bond splits a whole into two parts. Learn the pairs that make 10.
Step 1
Learn it
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A whole and two parts
The whole is 10. One part is 6. The other part is 4.
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Learn the pairs
1 and 9, 2 and 8, 3 and 7, 4 and 6, 5 and 5.
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Find the missing part
Know the whole and one part? Take the part away from 10 to find the other.
Step 2
Watch how
Two examples, worked out one step at a time.
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7 and ? make 10
10 − 7 = 3. So 7 and 3 make 10.
Answer: 3 -
2 and ? make 10
10 − 2 = 8. So 2 and 8 make 10.
Answer: 8
Step 3
Play with it
Split a number into two parts. Slide to change them.
Step 4
Practice
Five questions. Think first. Then tap Show answer.
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5 and ? make 10
Show answer
5
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9 and ? make 10
Show answer
1
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4 and ? make 10
Show answer
6
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8 and ? make 10
Show answer
2
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3 and ? make 10
Show answer
7