Flashcard DeckFree to use
Number Bonds Flashcards
A 16-card deck. Cards 1-8 cover number bonds to 10 (the foundational facts every KS1 child must know by heart). Cards 9-16 cover bonds to 20. Front: a partial sum. Back: the answer and a quick way to remember it.
Key stage
Key Stage 1
Subject
Mathematics
Time
~15 min
Access
Free
Format
Flashcard Deck
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1 + ?
1 + 9 = 10
One and nine make ten.
One and nine make ten.
2 + ?
2 + 8 = 10
Like a pair of socks plus 8 toes.
Like a pair of socks plus 8 toes.
3 + ?
3 + 7 = 10
Three little pigs plus 7 wolves.
Three little pigs plus 7 wolves.
4 + ?
4 + 6 = 10
Four legs plus six legs.
Four legs plus six legs.
5 + ?
5 + 5 = 10
One hand plus the other!
One hand plus the other!
6 + ?
6 + 4 = 10
Six dice dots plus four more.
Six dice dots plus four more.
7 + ?
7 + 3 = 10
Seven dwarfs plus three more friends.
Seven dwarfs plus three more friends.
8 + ?
8 + 2 = 10
An octopus plus a pair of eyes.
An octopus plus a pair of eyes.
10 + ?
10 + 10 = 20
All your fingers and toes.
All your fingers and toes.
11 + ?
11 + 9 = 20
Same as 1 + 9, then add a ten.
Same as 1 + 9, then add a ten.
13 + ?
13 + 7 = 20
Use bonds to 10: 3+7=10, then add the extra ten.
Use bonds to 10: 3+7=10, then add the extra ten.
15 + ?
15 + 5 = 20
Halfway there + 5 more.
Halfway there + 5 more.
17 + ?
17 + 3 = 20
Bridging: 17+3 = 17+3+0 = 20.
Bridging: 17+3 = 17+3+0 = 20.
20 − 6
20 − 6 = 14
If 6 + 14 = 20, then 20 − 6 = 14.
If 6 + 14 = 20, then 20 − 6 = 14.
20 − 13
20 − 13 = 7
Use the bond: 13 + 7 = 20.
Use the bond: 13 + 7 = 20.
20 − 4
20 − 4 = 16
If 4 + 16 = 20, then 20 − 4 = 16.
If 4 + 16 = 20, then 20 − 4 = 16.
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