# Mixed operations

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

## First-grade skills

- J.1 Addition and subtraction - ways to make a number
- J.2 Which sign makes the number sentence true?
- J.3 Fact families
- J.4 Addition and subtraction facts - numbers up to 10
- J.5 Addition and subtraction facts - numbers up to 18
- J.6 Addition and subtraction word problems
- J.7 Addition and subtraction sentences: true or false?
- J.8 Ten more or less
- J.9 Add and subtract tens
- J.10 Addition and subtraction terms

## Second-grade skills

- K.3 Fact families
- K.4 Addition, subtraction, multiplication, and division terms
- K.5 Solve inequalities using addition and subtraction shortcuts
- L.1 Add and subtract numbers up to 20
- L.2 Addition and subtraction - ways to make a number - up to 20
- L.3 Addition and subtraction word problems - up to 20
- L.4 Addition and subtraction - balance equations - up to 20
- L.5 Addition and subtraction equations up to 20: true or false?
- L.6 Input/output tables - write the rule - up to 20
- L.7 Input/output tables - add and subtract by 10
- L.8 Add and subtract numbers up to 100
- L.9 Addition and subtraction - ways to make a number - up to 100
- L.10 Addition and subtraction word problems - up to 100
- L.11 Addition and subtraction - balance equations - up to 100
- L.12 Input/output tables - write the rule - up to 100
- L.13 Input/output tables - add and subtract by 100
- L.14 Input/output tables - add and subtract by 10 or 100
- L.15 Which sign (+ or -) makes the number sentence true?
- L.16 Write addition and subtraction sentences
- L.17 Inequalities with addition and subtraction - up to 100
- P.9 Add money - up to $1
- P.10 Add money - up to $1: word problems
- P.11 Subtract money - up to $1
- P.12 Subtract money - up to $1: word problems
- P.13 Add and subtract money - up to $1
- P.14 Add and subtract money - up to $1: word problems

## Third-grade skills

- A.12 Comparing - with addition and subtraction
- A.13 Multi-step inequalities
- M.1 Addition, subtraction, multiplication, and division facts
- M.2 Complete the addition, subtraction, multiplication, or division sentence
- M.3 Multiplication and division facts up to 5: true or false?
- M.4 Multiplication and division facts up to 10: true or false?
- M.5 Multiplication and division facts up to 12: true or false?
- M.6 Multiplication and division sentences up to 12: true or false?
- M.7 Add, subtract, multiply, and divide
- M.8 Addition and subtraction word problems
- M.9 Addition, subtraction, multiplication, and division word problems
- M.10 Interpret data in tables
- M.11 Perform multiple operations with whole numbers
- M.12 Multi-step word problems
- M.13 Missing operators
- N.1 Addition, subtraction, multiplication, and division terms
- N.2 Understanding parentheses
- N.9 Relate addition and multiplication
- N.10 Relate multiplication and division
- P.16 Estimate sums, differences, products, and quotients: word problems
- S.7 Add and subtract money amounts
- S.9 Price lists
- AA.6 Add and subtract decimals
- AA.7 Add and subtract decimals - word problems

## Fourth-grade skills

- F.1 Add, subtract, multiply, and divide
- F.2 Addition, subtraction, multiplication, and division word problems
- F.3 Estimate sums, differences, products, and quotients: word problems
- F.4 Word problems with extra or missing information
- F.5 Solve word problems using guess-and-check
- F.6 Multi-step word problems
- F.7 Choose numbers with a particular sum, difference, product, or quotient
- F.8 Mentally add and subtract numbers ending in zeroes
- F.9 Write numerical expressions
- F.10 Perform multiple operations with whole numbers
- F.11 Inequalities involving addition, subtraction, multiplication, and division
- H.1 Input/output tables with addition, subtraction, multiplication, and division
- M.4 Add and subtract money amounts
- M.5 Add, subtract, multiply, and divide money amounts
- M.7 Price lists with addition and subtraction
- Q.9 Add and subtract fractions with like denominators
- Q.11 Add and subtract fractions with like denominators: word problems
- Q.12 Add and subtract fractions with like denominators in recipes
- Q.14 Add and subtract mixed numbers with like denominators
- R.7 Add and subtract fractions with unlike denominators: word problems
- R.13 Find the missing numerator or denominator in addition and subtraction sentences
- R.14 Add and subtract mixed numbers with unlike denominators
- R.15 Add and subtract mixed numbers with like and unlike denominators: word problems
- R.16 Compare sums and differences of fractions
- R.17 Add and subtract fractions with unlike denominators in recipes
- 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-grade skills

- A.8 Even or odd: arithmetic rules
- B.1 Add and subtract whole numbers up to billions
- 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
- H.3 Add and subtract decimal numbers
- H.4 Add and subtract decimals: word problems
- H.5 Choose decimals with a particular sum or difference
- H.6 Complete the addition or subtraction sentence
- H.7 Inequalities with decimal addition and subtraction
- H.8 Estimate sums and differences of decimals
- L.3 Add and subtract fractions with like denominators
- L.4 Add and subtract fractions with like denominators: word problems
- L.5 Add and subtract mixed numbers with like denominators
- L.11 Add and subtract fractions with unlike denominators: word problems
- L.15 Complete addition and subtraction sentences with fractions
- L.16 Inequalities with addition and subtraction of fractions
- L.17 Estimate sums and differences of mixed numbers
- L.20 Add and subtract mixed numbers: word problems
- L.21 Add and subtract fractions in recipes
- L.22 Complete addition and subtraction sentences with mixed numbers
- L.23 Inequalities with addition and subtraction of mixed numbers
- O.1 Add, subtract, multiply, and divide whole numbers
- O.2 Add, subtract, multiply, and divide whole numbers: word problems
- O.3 Write numerical expressions
- O.4 Evaluate numerical expressions
- O.5 Add, subtract, multiply, and divide decimals
- O.6 Add, subtract, multiply, and divide decimals: word problems
- O.7 Add, subtract, multiply, and divide fractions and mixed numbers
- O.8 Add, subtract, multiply, and divide fractions and mixed numbers: word problems
- P.1 Multi-step word problems
- S.1 Add and subtract money amounts
- S.2 Add and subtract money: word problems
- S.5 Price lists

## Sixth-grade skills

- A.5 Add and subtract whole numbers
- A.6 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
- H.6 Multiply and divide decimals by powers of ten
- 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
- J.9 Maps with fractional distances
- N.5 Add and subtract integers: find the sign
- N.6 Add and subtract integers: input/output tables
- O.1 Add, subtract, multiply, or divide two whole numbers
- O.2 Add, subtract, multiply, or divide two whole numbers: word problems
- O.3 Evaluate numerical expressions involving whole numbers
- O.4 Add, subtract, multiply, or divide two decimals
- O.5 Add, subtract, multiply, or divide two decimals: word problems
- O.6 Evaluate numerical expressions involving decimals
- O.7 Add, subtract, multiply, or divide two fractions
- O.8 Add, subtract, multiply, or divide two fractions: word problems
- O.9 Evaluate numerical expressions involving fractions
- O.10 Add, subtract, multiply, or divide two integers
- O.11 Evaluate numerical expressions involving integers
- P.4 Add and subtract rational numbers
- P.5 Multiply and divide rational numbers
- U.2 Add and subtract money amounts
- U.3 Add and subtract money amounts: word problems

## Seventh-grade 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 equations with integers
- C.5 Add and subtract integers: word problems
- C.6 Integer multiplication and division rules
- C.7 Multiply and divide integers
- C.8 Complete multiplication and division equations with integers
- C.9 Evaluate numerical expressions involving integers
- E.1 Add and subtract decimals
- E.2 Add and subtract decimals: word problems
- E.7 Estimate sums, differences, and products of decimals
- E.8 Add, subtract, multiply, and divide decimals: word problems
- E.9 Multi-step inequalities with decimals
- E.10 Maps with decimal distances
- E.11 Evaluate numerical expressions involving decimals
- 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
- G.15 Estimate products and quotients of fractions and mixed numbers
- G.16 Add, subtract, multiply, and divide fractions and mixed numbers: word problems
- G.17 Maps with fractional distances
- G.18 Evaluate numerical expressions involving fractions
- H.6 Add and subtract rational numbers
- H.7 Apply addition and subtraction rules
- H.8 Multiply and divide rational numbers
- H.9 Apply multiplication and division rules
- I.8 Evaluate numerical expressions involving exponents
- M.1 Add, subtract, multiply, and divide money amounts: word problems
- M.2 Price lists
- M.5 Unit prices: find the total price
- N.1 Estimate to solve word problems

## Eighth-grade 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
- C.6 Integer multiplication and division rules
- C.7 Multiply and divide integers
- C.8 Evaluate numerical expressions involving integers
- E.2 Add and subtract rational numbers
- E.3 Add and subtract rational numbers: word problems
- E.4 Apply addition and subtraction rules
- E.5 Multiply and divide rational numbers
- E.6 Multiply and divide rational numbers: word problems
- E.7 Apply multiplication and division rules
- E.8 Apply addition, subtraction, multiplication, and division rules
- E.9 Evaluate numerical expressions involving rational numbers
- F.12 Evaluate expressions using properties of exponents
- K.1 Price lists
- K.4 Unit prices: find the total price

## Algebra 1 skills

- B.1 Add, subtract, multiply, and divide integers
- B.2 Evaluate numerical expressions involving integers
- B.4 Add and subtract rational numbers
- B.5 Multiply and divide rational numbers
- B.6 Evaluate numerical expressions involving rational numbers
- M.3 Add and subtract matrices
- O.1 Word problems: mixed review
- O.2 Word problems with money
- V.8 Evaluate expressions using properties of exponents
- EE.5 Add and subtract radical expressions
- GG.4 Multiply and divide rational expressions
- GG.6 Add and subtract rational expressions