Level I math skills

361 skills 72 lessons 346 videos

IXL has hundreds of Level I math skills to learn and review! As you work through a skill, questions will adapt to match your level. Keep answering questions to reach mastery!

A. Integers

1
Understanding integers

2
Integers on number lines

3
Graph integers on horizontal and vertical number lines

4
Understanding absolute value

5
Absolute value and opposite integers

6
Quantities that combine to zero: word problems

7
Compare and order integers

8
Integer inequalities with absolute values

B. Operations with integers

1
Add integers using counters

2
Add integers using number lines

3
Integer addition rules

4
Add integers

5
Add three or more integers

6
Subtract integers using counters

7
Subtract integers using number lines

8
Integer subtraction rules

9
Subtract integers

10
Integer addition and subtraction rules

11
Add and subtract integers using counters

12
Add and subtract integers

13
Complete addition and subtraction equations with integers

14
Add and subtract integers: word problems

15
Understand multiplying by a negative integer using a number line

16
Integer multiplication rules

17
Multiply integers

18
Integer division rules

19
Equal quotients of integers

20
Divide integers

21
Integer multiplication and division rules

22
Multiply and divide integers

23
Complete multiplication and division equations with integers

24
Add, subtract, multiply, and divide integers

25
Evaluate numerical expressions involving integers

C. Decimals

1
Decimal numbers review

2
Compare and order decimals

3
Round decimals

D. Operations with decimals

1
Add and subtract decimals

2
Add and subtract decimals: word problems

3
Multiply decimals

4
Multiply decimals and whole numbers: word problems

5
Divide decimals

6
Divide decimals by whole numbers: word problems

7
Estimate sums, differences, and products of decimals

8
Add, subtract, multiply, or divide two decimals

9
Add, subtract, multiply, and divide decimals: word problems

10
Multi-step inequalities with decimals

11
Maps with decimal distances

12
Evaluate numerical expressions involving decimals

E. Number theory

1
Prime factorization

2
Greatest common factor

3
Least common multiple

4
GCF and LCM: word problems

F. Fractions

1
Understanding fractions: word problems

2
Equivalent fractions

3
Write fractions in lowest terms

4
Fractions: word problems with graphs and tables

5
Least common denominator

6
Compare and order fractions

7
Compare fractions: word problems

8
Convert between mixed numbers and improper fractions

9
Compare mixed numbers and improper fractions

10
Round mixed numbers

G. Operations with fractions

1
Add and subtract fractions

2
Add and subtract fractions: word problems

3
Add and subtract mixed numbers

4
Add and subtract mixed numbers: word problems

5
Inequalities with addition and subtraction of fractions and mixed numbers

6
Estimate sums and differences of mixed numbers

7
Multiply two fractions using models

8
Multiply fractions

9
Multiply mixed numbers

10
Multiply fractions and mixed numbers: word problems

11
Multiplicative inverses

12
Divide fractions

13
Divide mixed numbers

14
Divide fractions and mixed numbers: word problems

15
Estimate products and quotients of fractions and mixed numbers

16
Add, subtract, multiply, and divide fractions and mixed numbers: word problems

17
Maps with fractional distances

18
Evaluate numerical expressions involving fractions

H. Rational numbers

1
Convert fractions or mixed numbers to decimals

2
Convert decimals to fractions or mixed numbers

3
Convert between decimals and fractions or mixed numbers

4
Identify rational numbers

5
Classify rational numbers using a diagram

6
Classify rational numbers

7
Absolute value of rational numbers

8
Rational numbers: find the sign

9
Compare rational numbers

10
Put rational numbers in order

11
Classify real numbers

I. Operations with rational numbers

1
Add and subtract positive and negative decimals

2
Add and subtract positive and negative fractions

3
Add and subtract rational numbers

4
Apply addition and subtraction rules

5
Identify quotients of rational numbers: word problems

6
Multiply and divide positive and negative decimals

7
Multiply and divide positive and negative fractions

8
Multiply and divide rational numbers

9
Apply multiplication and division rules

10
Add, subtract, multiply, and divide rational numbers

11
Multi-step word problems with positive rational numbers

Checkpoint: Add and subtract rational numbers

Checkpoint: Multiply and divide rational numbers

Checkpoint: Problem solving with rational numbers

J. Exponents

1
Understanding exponents

2
Evaluate powers

3
Solve equations with variable exponents

4
Powers with negative bases

5
Powers with decimal and fractional bases

6
Powers of ten

7
Evaluate numerical expressions involving exponents

8
Scientific notation

9
Compare numbers written in scientific notation

K. Square roots

1
Square roots of perfect squares

2
Estimate square roots

L. Ratios, rates, and proportions

1
Understanding ratios

2
Identify equivalent ratios

3
Write an equivalent ratio

4
Equivalent ratios: word problems

5
Unit rates

6
Calculate unit rates with fractions

7
Solve word problems using unit rates

8
Compare ratios: word problems

9
Compare rates: word problems

10
Do the ratios form a proportion?

11
Do the ratios form a proportion: word problems

12
Solve proportions

13
Solve proportions: word problems

14
Estimate population size using proportions

M. Coordinate plane

1
Coordinate plane review

2
Quadrants and axes

3
Follow directions on a coordinate plane

4
Distance between two points

N. Proportional relationships

1
Find the constant of proportionality from a table

2
Write equations for proportional relationships from tables

3
Identify proportional relationships by graphing

4
Find the constant of proportionality from a graph

5
Write equations for proportional relationships from graphs

6
Identify proportional relationships from graphs and equations

7
Identify proportional relationships from tables

8
Complete a table and graph a proportional relationship

9
Graph a proportional relationship: word problems

10
Interpret graphs of proportional relationships

O. Percents

1
What percentage is illustrated?

2
Convert between percents, fractions, and decimals

3
Compare percents to fractions and decimals

4
Estimate percents of numbers

5
Solve percent problems using strip models

6
Percents of numbers and money amounts

7
Percents of numbers: word problems

8
Solve percent equations

9
Solve percent equations: word problems

10
Percent of change

11
Percent of change: word problems

12
Percent of change: find the original amount word problems

13
Percent error: word problems

P. Consumer math

1
Add, subtract, multiply, and divide money amounts: word problems

2
Price lists

3
Unit prices

4
Unit prices with unit conversions

5
Unit prices: find the total price

6
Percent of a number: tax, discount, and more

7
Which is the better coupon?

8
Find the percent: tax, discount, and more

9
Sale prices: find the original price

10
Multi-step problems with percents

11
Estimate tips

12
Simple interest

13
Compound interest

Checkpoint: Unit rates, ratios, and percents

Q. Units of measurement

1
Compare and convert customary units

2
Mixed customary units

3
Compare and convert metric units

4
Convert between customary and metric systems

5
Celsius and Fahrenheit temperatures

R. Expressions

1
Write variable expressions: one operation

2
Write variable expressions: two or three operations

3
Write variable expressions: word problems

4
Evaluate linear expressions

5
Evaluate multi-variable expressions

6
Evaluate absolute value expressions

7
Evaluate nonlinear expressions

8
Identify terms and coefficients

9
Sort factors of variable expressions

S. Equivalent expressions

1
Properties of addition and multiplication

2
Simplify expressions by combining like terms: with algebra tiles

3
Simplify expressions by combining like terms

4
Multiply using the distributive property: area models

5
Multiply using the distributive property

6
Write equivalent expressions using properties

7
Add and subtract linear expressions

8
Add and subtract like terms: with exponents

9
Factor linear expressions: area models

10
Factors of linear expressions

11
Identify equivalent linear expressions using algebra tiles

12
Identify equivalent linear expressions I

13
Identify equivalent linear expressions II

T. One-variable equations

1
Which x satisfies an equation?

2
Write an equation from words

3
Solve equations using properties

4
Model and solve equations using algebra tiles

5
Write and solve equations that represent diagrams

6
Solve one-step equations

7
Solve one-step equations with decimals and fractions

8
Solve two-step equations without parentheses

9
Solve two-step equations with parentheses

10
Solve two-step equations

11
Solve two-step equations with fractions

12
Choose two-step equations: word problems

13
Solve two-step equations: word problems

14
Solve equations involving like terms

15
Solve equations: complete the solution

Checkpoint: Solve two-step equations

U. One-variable inequalities

1
Solutions to inequalities

2
Graph inequalities on number lines

3
Write inequalities from number lines

4
Solve one-step inequalities

5
Graph solutions to one-step inequalities

6
One-step inequalities: word problems

7
Solve two-step inequalities

8
Graph solutions to two-step inequalities

Checkpoint: Solve two-step inequalities

V. Sequences

1
Identify arithmetic and geometric sequences

2
Arithmetic sequences

3
Geometric sequences

4
Sequences: mixed review

5
Sequences: word problems

6
Evaluate variable expressions for sequences

7
Write variable expressions for arithmetic sequences

W. Slope

1
Find the slope from a graph

2
Find the slope from two points

3
Find a missing coordinate using slope

4
Graph a line using slope

5
Constant rate of change: tables

6
Constant rate of change: graphs

7
Rate of change: tables

8
Rate of change: graphs

X. Two-variable equations

1
Identify independent and dependent variables

2
Find a value using two-variable equations

3
Evaluate two-variable equations: word problems

4
Complete a table for a two-variable relationship

5
Write a two-variable equation

6
Identify the graph of an equation

7
Graph a two-variable equation

8
Interpret a graph: word problems

9
Write an equation from a graph using a table

10
Write a linear equation from a graph

Y. Lines and angles

1
Name, measure, and classify angles

2
Lines, line segments, and rays

3
Parallel, perpendicular, and intersecting lines

4
Identify complementary, supplementary, vertical, and adjacent angles

5
Find measures of complementary, supplementary, vertical, and adjacent angles

6
Write and solve equations using angle relationships

7
Identify alternate interior and alternate exterior angles

8
Transversals of parallel lines: name angle pairs

9
Transversals of parallel lines: find angle measures

10
Find lengths and measures of bisected line segments and angles

Z. Two-dimensional figures

1
Identify and classify polygons

2
Classify triangles

3
Triangle inequality

4
Identify trapezoids

5
Classify quadrilaterals I

6
Classify quadrilaterals II

7
Graph triangles and quadrilaterals

8
Find missing angles in triangles

9
Find missing angles in triangles using ratios

10
Find missing angles in quadrilaterals I

11
Find missing angles in quadrilaterals II

12
Interior angles of polygons

13
Parts of a circle

14
Central angles of circles

AA. Three-dimensional figures

1
Bases of three-dimensional figures

2
Nets of three-dimensional figures

3
Front, side, and top view

4
Cross sections of three-dimensional figures
•
Coming soon: Checkpoint: Geometric reasoning

BB. Perimeter and area

1
Perimeter

2
Area of rectangles and parallelograms

3
Area of triangles and trapezoids

4
Area and perimeter: word problems

5
Circumference of circles

6
Area of circles

7
Circles: word problems

8
Area of semicircles and quarter circles

9
Semicircles: calculate area, perimeter, radius, and diameter

10
Quarter circles: calculate area, perimeter, and radius

11
Area of compound figures made of rectangles

12
Area of compound figures with triangles

13
Area of compound figures with triangles, semicircles, and quarter circles

14
Area between two shapes

CC. Surface area and volume

1
Surface area of cubes and prisms

2
Surface area of pyramids

3
Lateral area of prisms and pyramids

4
Surface area of cylinders

5
Volume of cubes and prisms

6
Volume of cubes and rectangular prisms: word problems

7
Volume of prisms: advanced

8
Volume of pyramids

9
Volume of cylinders

Checkpoint: Area, circumference, surface area, and volume

DD. Scale drawings

1
Scale drawings of polygons

2
Scale drawings: word problems

3
Scale drawings: scale factor word problems

4
Perimeter and area: changes in scale

Checkpoint: Scale drawings

EE. Transformations

1
Identify reflections, rotations, and translations

2
Translations: graph the image

3
Translations: find the coordinates

4
Reflections over the x- and y-axes: graph the image

5
Reflections over the x- and y-axes: find the coordinates

6
Reflections: graph the image

7
Reflections: find the coordinates

8
Rotations: graph the image

9
Rotations: find the coordinates

FF. Congruence and similarity

1
Similar and congruent figures

2
Congruence statements and corresponding parts

3
Side lengths and angle measures of congruent figures

4
Side lengths and angle measures of similar figures

5
Similar figures and indirect measurement

GG. Data and graphs

1
Create line plots

2
Interpret line plots

3
Create and interpret line plots with fractions

4
Create stem-and-leaf plots

5
Interpret stem-and-leaf plots

6
Create bar graphs

7
Interpret bar graphs

8
Create histograms

9
Interpret histograms

10
Create frequency tables

11
Interpret circle graphs

12
Circle graphs and central angles

13
Box plots

HH. Statistics

1
Calculate mean, median, mode, and range

2
Interpret charts and graphs to find mean, median, mode, and range

3
Mean, median, mode, and range: find the missing number

4
Changes in mean, median, mode, and range

5
Calculate mean absolute deviation

6
Calculate quartiles and interquartile range

7
Identify an outlier

8
Populations and samples

9
Identify representative, random, and biased samples

10
Make inferences from multiple samples

11
Compare populations using measures of center and spread
•
Coming soon: Checkpoint: Samples of a population
•
Coming soon: Checkpoint: Compare two populations

II. Probability

1
Sample spaces of simple events

2
Probability of simple events

3
Probability of simple events and opposite events

4
Probability of mutually exclusive events and overlapping events

5
Experimental probability

6
Make predictions using experimental probability

7
Use collected data to find probabilities and make predictions

8
Make predictions using theoretical probability

9
Sample spaces for compound events

10
Compound events: find the number of outcomes

11
Compound events: find the number of sums

12
Find the number of outcomes: word problems

13
Probability of compound events

14
Which simulation represents the situation?

15
Identify independent and dependent events

16
Probability of independent and dependent events
•
Coming soon: Checkpoint: Theoretical and experimental probability
•
Coming soon: Checkpoint: Probability of compound events