Adding numbers together, from counting on to column addition.
Addition is combining amounts to find a total. Children start by counting on (5 + 3: "five… six, seven, eight"), then use number bonds such as 7 + 3 = 10, and later add larger numbers in columns, regrouping a ten when a column reaches 10 or more.
Counting forwards confidently helps, because early addition is counting on.
One error to watch for: writing a two-digit column total instead of regrouping. For example, 38 + 25 written as 513 instead of 63.
Addition is combining quantities — the first arithmetic most children meet, and the operation everything else leans on. It begins as counting on from a number, becomes recall of number bonds that make ten and twenty, and ends up as column addition with carrying across several digits.
The step that matters most is the middle one. A child who still counts on their fingers for 7 + 5 is doing real mathematics, but the effort leaves nothing spare for the problem the addition sits inside. Fluency with small sums is what frees attention for everything later.
Interactive practice with instant feedback — free, ad-free and playable in the browser.
5-7 · speed
Build addition fluency with timed quick-fire sums for ages 5 to 7.
5-7 · speed
Build fast recall of doubles facts with timed quick-fire questions for ages 5 to 7.
5-7 · memory
Children flip cards to find two numbers that add up to 20, building number bonds and quick addition.
5-7 · speed
Children solve quick mental addition questions against a gentle timer, building fluency and speed.
8-10 · escape
Solve a chain of locked maths puzzles to complete a rainforest conservation mission, for ages 8 to 10.
2-4 · quiz
Find one more than a number to 10 with a friendly ladybird, for ages 2 to 4.
2-4 · builder
Fill the missing box in a part, part, whole bar model to split totals up to 10, for ages 2 to 4.
2-4 · memory
Flip cards to match each domino to its doubled total, building doubles facts for ages 2 to 4.
2-4 · quiz
Start at a number and count on using finger cues to land on the answer, for ages 2 to 4.
5-7 · puzzle
Add by making ten first: split the second number so 8 plus 5 becomes 8 plus 2 plus 3. For ages 5 to 7.
5-7 · builder
Build every pair of numbers that makes 10, arc by arc, as a number bond rainbow. For ages 5 to 7.
5-7 · memory
Flip cards to match each addition fact to the take away that undoes it, for ages 5 to 7.
Showing 12 of 33. Browse all games
Every worksheet prints as a clean A4 PDF with a separate answer key.
5-7 · fill-in
Fill-in-the-blank addition practice with sums up to 20. Five levels with answer keys.
5 levels · PDF + answer key
2-4 · number-line
Hop forward along a 1 to 10 number line and count the jumps. A visual counting activity for ages 2–4.
5 levels · PDF + answer key
5-7 · fill-in
Double each number and write the answer. A doubles-fact fluency worksheet for Grade 1 with five levels and answer keys.
5 levels · PDF + answer key
5-7 · word-problem
Friendly toy-shop word problems where children work out totals and costs within 20. For Grade 1, with answer keys.
5 levels · PDF + answer key
5-7 · match
Match the pairs of numbers that bond to make 20. A Grade 2 number-bonds matching activity with answer keys.
5 levels · PDF + answer key
5-7 · true-false
Decide whether each addition or subtraction sum is correct. A Grade 1 reasoning worksheet with true/false answers and answer keys.
5 levels · PDF + answer key
5-7 · word-problem
Add up scores and points in a sporty word-problem worksheet for Grade 1, with five levels and answer keys.
5 levels · PDF + answer key
5-7 · fill-in
Count the coins and write the total amount. A Grade 1 money worksheet with five levels and answer keys.
5 levels · PDF + answer key
5-7 · color-by-number
Solve addition facts with sums up to 50 and colour the picture by the answer. A Grade 1–2 colour activity with answer keys.
5 levels · PDF + answer key
8-10 · fill-in
Add and subtract mixed numbers with the same denominator and write the answer. A Grade 4–5 fractions worksheet with answer keys.
5 levels · PDF + answer key
8-10 · grid
Complete a 6×6 addition square by adding the row and column headers. A Grade 3 addition-fluency grid with answer keys.
5 levels · PDF + answer key
8-10 · fill-in
Add and subtract decimals and write the answer. A Grade 4–5 decimal-operations worksheet with five levels and answer keys.
5 levels · PDF + answer key
Showing 12 of 56. Browse all worksheets
Addition appears across several grades on this site, with the skills becoming more advanced over time. Jump to a grade page for a broader set of activities at that level.
Short and frequent beats long and occasional — five minutes most days will build recall that a weekend hour will not. Use the games when you want speed and repetition with instant correction, and the worksheets when it helps to slow down and see written working.
If your child is counting on their fingers for small sums, that is not a problem to correct so much as a sign that number bonds need more practice. Watch for the sums they hesitate on rather than the ones they get wrong; hesitation is the earlier signal.
Browse Math by Grade for a full set of age-appropriate activities rather than a single strand.
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