# Subtraction

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

Here is a list of all of the skills that cover subtraction! To start practising, just click on any link.

## Senior-infants skills

- L.1 Subtract with pictures - numbers up to 5
- L.2 Subtraction sentences - numbers up to 5
- L.3 Subtract - numbers up to 5
- L.4 Complete the subtraction sentence - numbers up to 5
- L.5 Subtraction word problems - numbers up to 5
- M.1 Subtract with pictures - numbers up to 10
- M.2 Subtraction sentences - numbers up to 10
- M.3 Make a number using subtraction - numbers up to 10
- M.4 Subtract - numbers up to 10
- M.5 Complete the subtraction sentence - numbers up to 10
- M.6 Write subtraction sentences
- M.7 Subtraction word problems - numbers up to 10
- V.1 Sum and difference

## First-class skills

- F.1 Subtract with pictures - numbers up to 10
- F.2 Subtraction sentences - numbers up to 10
- F.3 Subtraction sentences using number lines - numbers up to 10
- F.4 Subtract zero and all
- G.1 Subtracting 1
- G.2 Subtracting 2
- G.3 Subtracting 3
- G.4 Subtracting 4
- G.5 Subtracting 5
- G.6 Subtracting 6
- G.7 Subtracting 7
- G.8 Subtracting 8
- G.9 Subtracting 9
- G.10 Subtracting 0
- H.1 Subtraction facts - numbers up to 10
- H.2 Ways to make a number - subtraction sentences
- H.3 Ways to subtract from a number - subtraction sentences
- H.4 Make a number using subtraction - numbers up to 10
- H.5 Complete the subtraction sentence
- H.6 Subtraction word problems - numbers up to 10
- H.7 Subtraction sentences for word problems - numbers up to 10
- H.8 Subtraction facts - numbers up to 18
- H.9 Subtraction sentences using number lines - numbers up to 18
- H.10 Subtraction word problems - numbers up to 18
- H.11 Subtraction sentences for word problems - numbers up to 18
- H.12 Make a number using subtraction - numbers up to 20
- H.13 Related subtraction facts
- H.14 Subtraction sentences: true or false?
- H.15 Subtract a one-digit number from a two-digit number - without regrouping
- H.16 Subtract a one-digit number from a two-digit number - with regrouping
- H.17 Subtract two two-digit numbers - without regrouping
- H.18 Subtract two two-digit numbers - with regrouping
- H.19 Subtraction word problems - up to two digits
- I.1 Relate addition and subtraction sentences
- I.2 Subtract doubles
- I.3 Subtract multiples of 10
- I.4 Subtract a multiple of 10
- W.1 Addition and subtraction - ways to make a number
- W.2 Which sign makes the number sentence true?
- W.3 Fact families
- W.4 Addition and subtraction facts - numbers up to 10
- W.5 Addition and subtraction facts - numbers up to 18
- W.6 Addition and subtraction word problems
- W.7 Ten more or less
- W.8 Add and subtract tens
- W.9 Addition and subtraction terms

## Second-class skills

- F.1 Review - subtract one-digit numbers - up to 10
- F.2 Review - ways to subtract - up to 10
- F.3 Review - writing subtraction sentences - up to 10
- F.4 Subtract doubles
- F.5 Subtract a one-digit number from a two-digit number up to 18
- F.6 Subtraction with pictures
- F.7 Write subtraction sentences to describe pictures - up to 18
- F.8 Subtraction input/output tables - up to 18
- F.9 Subtract zero/all
- F.10 Subtraction word problems - up to 18
- F.11 Complete the subtraction sentence - up to 18
- F.12 Write the subtraction sentence - up to 18
- F.13 Balance subtraction equations - up to 18
- H.1 Subtract multiples of 10
- H.2 Subtract a one-digit number from a two-digit number - without regrouping
- H.3 Subtract a one-digit number from a two-digit number - with regrouping
- H.4 Subtract two two-digit numbers - without regrouping
- H.5 Subtract two two-digit numbers - with regrouping
- H.6 Write subtraction sentences to describe pictures - up to two digits
- H.7 Subtraction input/output tables - up to two digits
- H.8 Ways to make a number using subtraction
- H.9 Subtraction word problems - up to two digits
- H.10 Complete the subtraction sentence - up to two digits
- H.11 Write the subtraction sentence - up to two digits
- H.12 Balance subtraction equations - up to two digits
- J.1 Subtract multiples of 100
- J.2 Subtract three-digit numbers
- J.3 Subtraction input/output tables - up to three digits
- J.4 Subtraction word problems - up to three digits
- J.5 Complete the subtraction sentence - up to three digits
- J.6 Write the subtraction sentence - up to three digits
- J.7 Balance subtraction equations - up to three digits
- K.2 Related subtraction facts
- K.3 Fact families
- K.5 Solve inequalities using addition and subtraction shortcuts
- N.8 Add and subtract money - up to €1
- N.9 Add and subtract money - word problems - up to €1
- N.10 Add and subtract money - word problems - up to €5
- X.1 Add and subtract numbers up to 20
- X.2 Addition and subtraction - ways to make a number - up to 20
- X.3 Addition and subtraction word problems - up to 20
- X.4 Addition and subtraction - balance equations - up to 20
- X.5 Input/output tables - write the rule - up to 20
- X.6 Add and subtract numbers up to 100
- X.7 Addition and subtraction - ways to make a number - up to 100
- X.8 Addition and subtraction word problems - up to 100
- X.9 Addition and subtraction - balance equations - up to 100
- X.10 Input/output tables - write the rule - up to 100
- X.11 Which sign (+ or -) makes the number sentence true?
- X.12 Write addition and subtraction sentences
- X.13 Inequalities with addition and subtraction - up to 100

## Third-class skills

- A.11 Comparing - with addition and subtraction
- A.12 Multi-step inequalities
- D.1 Subtract numbers up to three digits
- D.2 Subtraction input/output tables - up to three digits
- D.3 Subtract numbers up to three digits - word problems
- D.4 Complete the subtraction sentence - up to three digits
- D.5 Balance subtraction equations - up to three digits
- D.6 Subtraction patterns over increasing place values
- D.7 Subtract numbers with four or more digits
- D.8 Subtraction input/output tables - four or more digits
- D.9 Subtraction: fill in the missing digits
- O.7 Add and subtract money amounts
- U.7 Estimate differences
- U.8 Estimate differences: word problems
- Y.7 Add and subtract decimals
- Y.8 Add and subtract decimals - word problems

## Fourth-class skills

- C.1 Subtract numbers up to five digits
- C.2 Subtract numbers up to five digits: word problems
- C.3 Subtraction: fill in the missing digits
- C.4 Subtraction patterns over increasing place values
- C.5 Choose numbers with a particular difference
- C.6 Estimate differences
- C.7 Estimate differences: word problems
- F.8 Mentally add and subtract numbers ending in zeroes
- L.3 Add and subtract money amounts
- L.6 Price lists
- R.2 Add and subtract fractions with like denominators using number lines
- R.3 Add and subtract fractions with like denominators
- R.4 Add and subtract fractions with like denominators: word problems
- R.5 Add and subtract mixed numbers with like denominators
- R.6 Add and subtract mixed numbers with like denominators: word problems
- R.10 Complete addition and subtraction sentences with fractions
- U.2 Subtract decimal numbers
- U.3 Add and subtract decimals: word problems
- U.4 Choose decimals with a particular sum or difference
- U.7 Complete the addition or subtraction sentence
- U.8 Inequalities with addition and subtraction
- U.9 Estimate sums and differences of decimals

## Fifth-class skills

- B.1 Add and subtract whole numbers up to millions
- B.2 Add and subtract whole numbers: word problems
- B.3 Complete addition and subtraction sentences
- B.4 Fill in the missing digits
- B.5 Choose numbers with a particular sum or difference
- B.7 Inequalities with addition and subtraction
- B.8 Estimate sums and differences of whole numbers
- B.9 Estimate sums and differences: word problems
- G.1 Add and subtract decimal numbers
- G.2 Add and subtract decimals: word problems
- G.3 Choose decimals with a particular sum or difference
- G.4 Complete the addition or subtraction sentence
- G.5 Inequalities with decimal addition and subtraction
- G.6 Estimate sums and differences of decimals
- K.2 Add and subtract fractions with like denominators using number lines
- K.3 Add and subtract fractions with like denominators
- K.4 Add and subtract fractions with like denominators: word problems
- K.5 Add and subtract mixed numbers with like denominators
- K.8 Subtract fractions with unlike denominators
- K.9 Add and subtract fractions with unlike denominators: word problems
- K.12 Complete addition and subtraction sentences with fractions
- K.13 Inequalities with addition and subtraction of fractions
- K.14 Estimate sums and differences of mixed numbers
- K.16 Subtract mixed numbers with unlike denominators
- K.17 Add and subtract mixed numbers: word problems
- K.18 Complete addition and subtraction sentences with mixed numbers
- K.19 Inequalities with addition and subtraction of mixed numbers
- P.1 Add and subtract money amounts
- P.2 Add and subtract money: word problems

## Sixth-class skills

- A.4 Add and subtract whole numbers
- A.5 Add and subtract whole numbers: word problems
- G.1 Add and subtract decimal numbers
- G.2 Add and subtract decimals: word problems
- G.3 Estimate sums and differences of decimals
- G.4 Maps with decimal distances
- J.1 Add and subtract fractions with like denominators
- J.2 Add and subtract fractions with like denominators: word problems
- J.3 Add and subtract fractions with unlike denominators
- J.4 Add and subtract fractions with unlike denominators: word problems
- J.5 Inequalities with addition and subtraction of like and unlike fractions
- J.6 Add and subtract mixed numbers
- J.7 Add and subtract mixed numbers: word problems
- J.8 Estimate sums and differences of mixed numbers
- N.3 Subtract integers using counters
- N.4 Subtract integers
- N.5 Add and subtract integers: find the sign
- N.6 Add and subtract integers: input/output tables
- U.2 Add and subtract money amounts
- U.3 Add and subtract money amounts: word problems

## First-year skills

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

## Second-year skills

- C.1 Integer addition and subtraction rules
- C.2 Add and subtract integers using counters
- C.3 Add and subtract integers
- C.4 Add and subtract three or more integers
- C.5 Add and subtract integers: word problems
- E.2 Add and subtract rational numbers
- E.3 Add and subtract rational numbers: word problems
- E.4 Apply addition and subtraction rules
- E.8 Apply addition, subtraction, multiplication and division rules