# Primary Maths: Addition and Subtraction Facts Resources

These activities for 7 to 9 year olds focus on addition and subtraction facts, starting with facts to twenty and building to include addition - subtraction inverses and multiples of 10 and 100.

For ages: 7 to 8
Squarebot Bonds
Click the flying saucer which shows the correct number to complete the sum on the space rocket.... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to 20, sums and differences of multiples of 10 and number pairs that total 100
I know and use addition and subtraction facts for all numbers to 20
Year 3, Block B, Unit 1

For ages: 7 to 8
Sinking Sums
Play against the clock. An addition fact to twenty falls into the swamp, can you choos the correct answer before it sink... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to 20, sums and differences of multiples of 10 and number pairs that total 100.
I know and use all addition and subtraction facts to 20.
Year 3, Block B, Unit 3

For ages: 7 to 8
Sum in a Box
It's quiz show time. An incomplete sum is displayed along with a lot of numbers in boxes. Look carefully and decide whic... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to 20, sums and differences of multiples of 10 and number pairs that total 100
I know the sum and difference of any pair of numbers to 20
Year 3, Block A, Unit 1

For ages: 7 to 8
Caterpillar Chaos
read the sum on each leaf, then look at the sums on the caterpillars. Drag the caterpillars onto the leaf which contains... more info
First used for Objective
Identify patterns and relationships involving numbers or shapes, and use these to solve problems
I can describe patterns when I solve problems
Year 3, Block B, Unit 1

For ages: 7 to 8
Caterpillar Crunch
Each caterpillar has an addition sum which is related to one of the sums on the leaves. Find the pattern in the sums and... more info
First used for Objective
Explain a process or present information, ensuring items are clearly sequenced, relevant details are included and accounts ended effectively
I can explain how I add and subtract numbers in my head
Year 3, Block A, Unit 1

For ages: 7 to 8
Bean Splat Snap
Play snap by matching the pairs of cards that sum to one hundred. Every time you get one right Triangle Man gets one ste... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to 20, sums and differences of multiples of 10 and number pairs that total 100
I know number pairs that sum to 100
Year 3, Block A, Unit 2

For ages: 7 to 8
Wet Sponge Sums
It's the wet sponge throwing stall at the fair, mentally add or subract multiple one and two digit numbers then select t... more info
First used for Objective
Add or subtract mentally combinations of one-digit and two-digit numbers.
Year 3, Block A, Unit 3

For ages: 8 to 9
Place Value Worm
The worms are trying to find the tastiest apple. Use your knowledge of addition facts to work out  the sums of multipler... more info
First used for Objective
"Use knowledge of addition and subtraction facts and place value to derive sums and differences of pairs of multiples of 10, 100 or 1000
Because I know sums like 3+7 = 10, I also know 30+70 = 100
Year 4, Block B, Unit 1

For ages: 8 to 9
Wheelie Difference
One of the wheels has fallen off Zero G's bike. Can you choose the right one to put back on? The numbers on the bike mus... more info
First used for Objective
Use knowledge of addition and subtraction facts and place value to derive sums and differences of pairs of multiples of 10, 100 or 1000
Because I know number facts such as 8 3 = 5, I know that 80 30 = 50.
Year 4, Block B, Unit 3

For ages: 9 & 10
Skating Scores
First used for Objective
Use knowledge of place value and addition and subtraction of two-digit numbers to derive sums and differences and doubles and halves of decimals (e.g. 6.5 ± 2.7, half of 5.6, double 0.34)
I can work out sums and differences of decimals with two digits
Year 5, Block A, Unit 1

For ages: 8 to 10
Shopping List Sums
Triangle Man explains a strategy to help with mental addition when adding up a lot of two digit numbers. Drag the units ... more info
First used for Objective
Extend mental methods for whole-number calculations, for example to multiply a two-digit number by a one-digit number (e.g. 12 × 9), to multiply by 25 (e.g. 16 × 25), to subtract one near-multiple of 1000 from another (e.g. 6070 - 4097)
I can use different mental strategies for calculations
Year 5, Block E, Unit 1

For ages: 9 to 11
Picture Perfect
Challenging problem solving using integers (whole numbers) and decimals. Can you construct the number sentence from only... more info
First used for Objective
Use knowledge of rounding, place value, number facts and inverse operations to estimate and check calculations.
I can estimate and check the result of a calculation
Year 5, Block A, Unit 3

For ages: 7 to 8
Suitcase sums
Pack the suitcase by dragging items into it. You'll need to keep careful track of what you're putting in as it has to we... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to 20, sums and differences of multiples of 10 and number pairs that total 100
I can add and subtract multiples of 10
Year 3, Block E, Unit 1

For ages: 6 to 7
Number Bonds
Recall addition facts to complete number sentences. Choose the correct jar of jam to complete questions such as 3 + ? = ... more info
First used for Objective
Derive and recall all addition and subtraction facts for each number to at least 10, all pairs with totals to 20 and all pairs of multiples of 10 with totals up to 100
I can recall number facts for each number up to 10
Year 2, Block B, Unit 1