Number bonds and number facts to 10
Number bonds to 10
0 + 10 1 + 9 2 + 8 3 + 7 4 + 6 5 + 5 6 + 4 7 + 3 8 + 2 9 + 1 10 + 0
Number facts to 10 – addition and subtraction
4 + 3 6 – 2 8 – 3 7 + 1 9 – 0 3 + 5 2 + 3 9 – 2 1 + 8 10 – 0 7 – 2 4 + 5 10 - 1
Doubles to 10
1+1 2+2 3+3 4+4 5+5 6+6 7+7 8+8 9+9 10+10
Halves to 20
Half 2 half 4 half 6 half 8 half 10 half 12 half 14 half 16 half 18 half 20
In the new maths curriculum, Year 1 children are expected to ‘know’ these number facts by the end of Year
1. This means knowing it in their heads without needing to work out the answers using their fingers.
Knowing these number facts at speed provides a solid foundation and helps them to work with bigger
numbers later.
e.g. If you know that 3 + 4 = 7, then you can work that 7 -3 = 4 and 30 + 40 = 70
If you know 8 – 5 = 3, then you can work out that 5 + 3 = 8 and 80 – 50 = 30
Computer games
www.topmarks.co.uk
Key Stage 1, 5 – 7 year olds – addition and subtraction




Number bonds machines – practise number bonds to 5, 10 and 100
Triangular cards – practise number facts within 10, 20, 100.
 Click on the triangles in the bottom corners of the big triangle to reveal the numbers, add
the two numbers together to find the answer under the top triangle OR subtract a bottom
number from the top number to find the number in the other bottom corner.
Bingo addition – practise adding up within ten and then up to 100
Cross the Swamp – practise addition and subtraction by counting on and back to find the answer
www.ictgames.com



Save the Whale – practise number bonds to 10
Funky Mummy – practise addition facts to 20
Number facts Bingo – download and print the Bingo cards and play the game
www.year2maths.co.uk
Knowing and using number facts –



Addition and subtraction within 5 – select games (not worksheets)
Addition and subtraction within 7- select games (not worksheets)
Make 10 – select games
Purple Mash Website – put your child’s login to get into the website or the class logins –
Woodpecker – ‘w’ then (click on the pictures) - bear, parrot, penguin, monkey
Heron – ‘h’ then (click on the pictures) Go to Games – then ‘Bond Bubbles’ – practise number bonds for numbers up to 10
Dominoes – 2 or 3 players


Addition number facts – play dominoes in the usual way but to get an extra point, as you put a
domino down, add the 2 sets of spots together (in each half of the domino) to make a total.
Winner is the person who gets rid of all their dominoes and with the highest number of points.
Subtraction number facts – same as above but subtract the lowest number of spots on one half of
the domino from the highest number of spots on the other half of the domino.
Playing cards – 2 players

Addition and subtraction number facts – (take out the king and queen and make the Jack 10) cut
the pack of cards into 2 halves, each player has one half of the cards each. Players take in turn to
turn over 2 cards at a time – alternate between adding and subtracting the 2 numbers.
E.g. turn over 3 and 7 --- 3 + 7 or 7 – 3
On each round, decide if the winner will be the person with the highest total or the lowest total.
Collect points to decide on the overall winner.

Number bonds to 10 or 20 – (take out the king and queen and make the Jack 10) place 10 cards up
on the table. Take in turns to select 2 cards that make totals to 10 e.g. 2 and 8, 4 and 6, 5 and 5.
When run out of cards to make new number bonds, turn over a card from the pile and put on the
table. Continue until all number bonds to 10 have been made. Winner is the first person to make
all number bonds to 10. Play the game with other number bonds. N.B – this game could also be
played with doubles and halves.

Dice –
 Throw 2 dice (or one dice 2 times) and add the number. OR Throw 2 dice and take the
smaller number away from the larger number. Winner – either person with biggest or
smallest number.
 Track games – throw 2 dice, add the numbers together and jump the total on the track OR
throw 2 dice, subtract the smaller number from the bigger one and jump the total on the
track . Winner is the first person to reach the end of the track.