# Addition

Here is a list of all of the skills that cover addition! These skills are organised by year, and you can move your mouse over any skill name to view a sample question. To start practising, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

## Foundation skills

- K.1Addition with pictures - sums up to 5
- K.2Add two numbers - sums up to 5
- K.3Addition sentences - sums up to 5
- K.4Addition word problems - sums up to 5
- K.5Addition with pictures - sums up to 10
- K.6Add two numbers - sums up to 10
- K.7Addition sentences - sums up to 10
- K.8Addition word problems - sums up to 10
- U.1Sum and difference

## Year 1 skills

- C.1Addition with pictures - sums to 10
- C.2Addition sentences - sums to 10
- C.3Addition sentences to 10 using number lines
- C.4Addition word problems - sums to 10
- C.5Word problems - write the addition sentence
- C.6Ways to make a number using addition
- C.7Ways to make a number - addition sentences
- C.8Adding zero
- C.9Adding doubles
- C.10Addition facts - sums to 10
- C.11Addition sentences to 18 using number lines
- C.12Addition facts - sums to 18
- C.13Addition word problems - sums to 18
- C.14Complete the addition sentence
- C.15Adding three numbers
- C.16Word problems - adding three numbers
- C.17Related addition facts
- C.18Add using doubles plus 1
- C.19Add using doubles minus 1
- C.20Addition facts - sums to 20
- C.21Add tens I
- C.22Add tens II
- C.23Add a one-digit number to a two-digit number - without regrouping
- C.24Add a one-digit number to a two-digit number - with regrouping
- D.1Adding 0
- D.2Adding 1
- D.3Adding 2
- D.4Adding 3
- D.5Adding 4
- D.6Adding 5
- D.7Adding 6
- D.8Adding 7
- D.9Adding 8
- D.10Adding 9
- R.1Addition and subtraction - ways to make a number
- R.2Which sign makes the number sentence true?
- R.3Fact families
- R.4Addition and subtraction facts - numbers up to 10
- R.5Addition and subtraction facts - numbers up to 18
- R.6Addition and subtraction word problems
- R.7Ten more or less
- R.8Add and subtract tens
- R.9Addition and subtraction terms

## Year 2 skills

- E.1Review - add one-digit numbers - sums to 10
- E.2Review - ways to make a number - sums to 10
- E.3Review - writing addition sentences - sums to 10
- E.4Adding doubles
- E.5Add one-digit numbers
- E.6Addition with pictures - sums to 20
- E.7Write addition sentences to describe pictures - sums to 20
- E.8Addition input/output tables - sums to 20
- E.9Add zero
- E.10Addition word problems - one digit
- E.11Complete the addition sentence - one digit
- E.12Write the addition sentence - one digit
- E.13Balance addition equations - one digit
- E.14Add three or more one-digit numbers
- E.15Add three or more one-digit numbers - word problems
- E.16Identify repeated addition in arrays: sums to 10
- E.17Write addition sentences for arrays: sums to 10
- E.18Identify repeated addition in arrays: sums to 25
- E.19Write addition sentences for arrays: sums to 25
- G.1Add multiples of 10
- G.2Add a two-digit and a one-digit number - without regrouping
- G.3Add a two-digit and a one-digit number - with regrouping
- G.4Add two two-digit numbers - without regrouping
- G.5Add two two-digit numbers - with regrouping
- G.6Write addition sentences to describe pictures
- G.7Addition input/output tables - up to two digits
- G.8Ways to make a number using addition
- G.9Addition word problems - up to two digits
- G.10Complete the addition sentence - up to two digits
- G.11Write the addition sentence - up to two digits
- G.12Balance addition equations - up to two digits
- G.13Add three or more numbers up to two digits each
- G.14Add three or more numbers up to two digits - word problems
- I.1Add multiples of 100
- I.2Add two three-digit numbers
- I.3Addition input/output tables - up to three digits
- I.4Addition word problems - up to three digits
- I.5Complete the addition sentence - up to three digits
- I.6Write the addition sentence - up to three digits
- I.7Balance addition equations - up to three digits
- K.1Related addition facts
- K.3Fact families
- K.5Solve inequalities using addition and subtraction shortcuts
- M.1Add and subtract numbers up to 20
- M.2Addition and subtraction - ways to make a number - up to 20
- M.3Addition and subtraction word problems - up to 20
- M.4Addition and subtraction - balance equations - up to 20
- M.5Input/output tables - write the rule - up to 20
- M.6Add and subtract numbers up to 100
- M.7Addition and subtraction - ways to make a number - up to 100
- M.8Addition and subtraction word problems - up to 100
- M.9Addition and subtraction - balance equations - up to 100
- M.10Input/output tables - write the rule - up to 100
- M.11Which sign (+ or -) makes the number sentence true?
- M.12Write addition and subtraction sentences
- M.13Inequalities with addition and subtraction - up to 100
- N.7Estimate sums
- P.8Add and subtract money - up to $1
- P.9Add and subtract money - word problems - up to $1
- P.10Add and subtract money - word problems - up to $5
- W.3Relate addition and multiplication

## Year 3 skills

- A.13Comparing - with addition and subtraction
- A.14Multi-step inequalities
- C.1Add two numbers up to three digits
- C.2Addition input/output tables - up to three digits
- C.3Add two numbers up to three digits - word problems
- C.4Complete the addition sentence - up to three digits
- C.5Balance addition equations - up to three digits
- C.6Add three or more numbers up to three digits each
- C.7Add three or more numbers up to three digits - word problems
- C.8Addition patterns over increasing place values
- C.9Add two numbers with four or more digits
- C.10Addition input/output tables - four or more digits
- C.11Add two numbers with four or more digits - word problems
- C.12Complete the addition sentence - four or more digits
- C.13Balance equations - four or more digits
- C.14Add three or more numbers with four or more digits
- C.15Add three or more numbers with four or more digits - word problems
- C.16Addition: fill in the missing digits
- I.1Addition and subtraction facts
- I.2Addition and subtraction facts – ways to make a number
- I.3Addition and subtraction facts – balance equations
- J.7Estimate sums
- L.7Add and subtract money amounts
- L.8Add money amounts - word problems
- R.7Add and subtract decimals
- R.8Add and subtract decimals - word problems
- R.9Add three or more decimal numbers
- S.1Fact families
- S.3Relate addition and multiplication

## Year 4 skills

- B.1Add numbers up to five digits
- B.2Add numbers up to five digits: word problems
- B.3Addition: fill in the missing digits
- B.4Properties of addition
- B.5Input/output tables with addition
- B.6Add three or more numbers up to five digits each
- B.7Addition patterns over increasing place values
- B.8Choose numbers with a particular sum
- B.9Estimate sums
- B.10Estimate sums: word problems
- F.2Complete the addition or subtraction sentence - up to 100
- F.3Addition and subtraction - balance equations - up to 100
- F.10Mentally add and subtract numbers ending in zeroes
- I.5Add and subtract money amounts
- I.7Price lists
- O.1Add decimal numbers
- O.3Add and subtract decimals: word problems
- O.4Choose decimals with a particular sum or difference
- O.5Add three or more decimals
- O.6Add three or more decimals: word problems
- O.7Complete the addition or subtraction sentence
- O.8Inequalities with addition and subtraction
- O.9Estimate sums and differences of decimals

## Year 5 skills

- D.1Add and subtract whole numbers up to millions
- D.2Add and subtract whole numbers: word problems
- D.3Add and subtract money amounts
- D.4Add and subtract money: word problems
- D.5Complete addition and subtraction sentences
- D.6Fill in the missing digits
- D.7Choose numbers with a particular sum or difference
- D.8Properties of addition
- D.9Inequalities with addition and subtraction
- D.10Estimate sums and differences of whole numbers
- D.11Estimate sums and differences: word problems
- E.1Add and subtract decimal numbers
- E.2Add and subtract decimals: word problems
- E.3Choose decimals with a particular sum or difference
- E.4Complete the addition or subtraction sentence
- E.5Inequalities with decimal addition and subtraction
- E.6Estimate sums and differences of decimals
- L.2Add and subtract fractions with like denominators using number lines
- L.3Add and subtract fractions with like denominators
- L.4Add and subtract fractions with like denominators: word problems
- L.5Add and subtract mixed numbers with like denominators
- L.6Add and subtract mixed numbers with like denominators: word problems
- L.7Add up to 4 fractions with denominators of 10 and 100
- L.8Add three or more fractions
- L.9Add three or more fractions: word problems
- L.10Complete addition and subtraction sentences with fractions
- L.11Inequalities with addition and subtraction of fractions
- L.12Estimate sums and differences of mixed numbers

## Year 6 skills

- E.2Add and subtract money amounts
- E.3Add and subtract money amounts: word problems
- G.1Add and subtract whole numbers up to millions
- G.2Add and subtract whole numbers: word problems
- G.3Properties of addition
- G.4Estimate sums and differences of whole numbers
- G.5Estimate sums and differences: word problems
- G.6Add and subtract decimal numbers
- G.7Add and subtract decimals: word problems
- G.8Estimate sums and differences of decimals
- G.9Maps with decimal distances
- S.1Add and subtract fractions with like denominators
- S.2Add and subtract fractions with like denominators: word problems
- S.3Inequalities with addition and subtraction of like fractions
- S.4Add fractions with unlike denominators
- S.6Add and subtract fractions with unlike denominators: word problems
- S.7Add and subtract mixed numbers with like denominators
- S.8Add and subtract mixed numbers with like denominators: word problems
- S.9Estimate sums and differences of mixed numbers

## Year 7 skills

- C.1Add and subtract decimals
- C.2Add and subtract decimals: word problems
- C.10Maps with decimal distances
- E.1Integer addition and subtraction rules
- E.2Add and subtract integers using counters
- E.3Add and subtract integers
- E.4Complete addition and subtraction sentences with integers
- E.5Add and subtract integers: word problems
- G.1Add and subtract fractions with like denominators
- G.2Add and subtract fractions with like denominators: word problems
- G.3Add fractions with unlike denominators
- G.5Add and subtract fractions with unlike denominators: word problems
- G.6Add and subtract mixed numbers
- G.7Add and subtract mixed numbers: word problems
- G.8Inequalities with addition and subtraction of fractions and mixed numbers
- G.9Estimate sums and differences of mixed numbers
- H.6Add and subtract rational numbers
- W.1Properties of addition and multiplication

## Year 8 skills

- C.1Integer addition and subtraction rules
- C.2Add and subtract integers using counters
- C.3Add and subtract integers
- C.4Add and subtract three or more integers
- C.5Add and subtract integers: word problems
- E.2Add and subtract rational numbers
- E.3Add and subtract rational numbers: word problems
- X.1Properties of addition and multiplication