Third Grade Math

This list is representative of the materials provided or used in this course. Keep in mind that the actual materials used may vary, depending on the school in which you are enrolled, and whether you are taking the course as Independent Study.

For a complete list of the materials to be used in this course by your enrolled student, please visit MyInfo. All lists are subject to change at any time.

Scope & Sequence : Scope & Sequence documents describe what is covered in a course (the scope) and also the order in which topics are covered (the sequence). These documents list instructional objectives and skills to be mastered. K12 Scope & Sequence documents for each course include:

Course Overview

Third grade students continue to develop computational skills in addition, subtraction, multiplication, and division, and solve problems involving more complex mathematical concepts. Students will continue using a variety of methods to solve problems and begin their study of probability as chance. Students will:

  • Work with larger numbers and decimals
  • Study place value and estimating using rounding
  • Develop calculation skills using place value blocks to understand addition, subtraction, and regrouping
  • Establish fluency with simple addition, subtraction, division, and multiplication number facts
  • Study the basics of probability
  • Use graphs and charts to understand how data can be represented visually
  • Learn more about the basics of geometry
  • Use strategies for solving word problems fractions
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Course Length

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Prerequisites

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Course Outline

Place Value

  • Read and write numbers through 999,999 in standard, expanded, and word name forms
  • Compare and order numbers through 9,999
  • Round whole numbers through 999,999 to the nearest ten, hundred, or thousand
  • Skip count by 2, 3, 4, 5, and 10 to 100, and use skip counting to complete number patterns
  • Compare money amounts through $99.99
  • Count money amounts with coins and bills through $99.99 and make change
  • Round money amounts through $99.99 to the nearest dollar

Addition

  • Add two-digit numbers with and without regrouping
  • Use strategies to add more than two addends:look for tens and doubles, and count on
  • Find up to two missing addends
  • Estimate sums through 9,999 using rounding to the nearest ten or hundred
  • Estimate sums through 9,999 using front-end estimation
  • Add money amounts with sums up to and including $99.99 with and without regrouping
  • Estimate sums through $99.99 to the nearest 10 cents or dollar
  • Add three- and four-digit numbers with and without regrouping
  • Add numbers with sums through 100 mentally,looking for patterns and breaking apart numbers to find tens

Subtraction

  • Subtract two-, three-, and four-digit numbers with and without regrouping
  • Estimate differences using rounding to the nearest ten, hundred, or thousand with numbers through 9,999
  • Estimate differences using front-end estimation with numbers through 9,999
  • Subtract money amounts with differences through $99.99
  • Estimate differences of money using rounding to the nearest ten cents, dollar, or ten dollars with money amounts through $99.99
  • Estimate differences of money using front-end estimation with money amounts through $99.99

Multiplication Concepts and Facts

  • State multiplication facts through 5
  • Multiply money amounts with products through 45¢
  • Find a missing factor in multiplication facts through 5
  • Use the commutative property to solve multiplication facts through 5

Division Concepts and Facts

  • Divide one- and two-digit dividends by 1, 2, 3, 4, and 5
  • Divide money amounts with dividends through 45¢
  • Use the inverse relationship between multiplication and division to solve problems with two-digit dividends and divisors through 5

Statistics and Probability

  • Read, interpret, and make tally charts, pictographs,and bar graphs with up to six groups
  • Make organized lists and tree diagrams to count arrangements of up to 6 objects
  • Predict outcomes based on probability
  • Find the probability of a simple event with probabilities expressed as fractions with denominators through eight

Measurement and Time

  • Use English and metric units to measure length,weight, and capacity
  • Use English and metric units to estimate length, weight, and capacity
  • Choose the appropriate customary or metric unit of length, weight, and capacity
  • Compare English or metric units of length, weight,and capacity
  • Choose the appropriate tool for measuring length,capacity, or weight
  • Use a map to estimate and find distances
  • Read a thermometer and record temperatures in degrees Fahrenheit and Celsius
  • Read and write time to the half hour, quarter hour,and minute
  • Solve elapsed time problems
  • Read and interpret a calendar

More Multiplication and Division Facts

  • State multiplication facts through 9
  • Multiply three one-digit factors with products through 81
  • Divide one- and two-digit dividends by one-digit divisors
  • Identify and write multiplication and division fact families through 9
  • Identify and extend number patterns

Geometry

  • Identify and compare attributes of plane figures:polygon, triangle, square, rectangle, pentagon, and hexagon
  • Identify and compare attributes of space figures:cylinder, sphere, cube, pyramid, cone, and rectangular prism
  • Measure and compute perimeter, area, and volume
  • Identify congruent and similar figures
  • Classify angles: right angle, acute angle, or obtuse angle
  • Identify and draw lines, line segments, and rays
  • Identify and draw parallel lines and intersecting lines
  • Identify slides, flips, and turns and complete patterns using them
  • Recognize lines of symmetry in plane figures
  • Locate points and name ordered pairs on a coordinate grid

Multiply by One Digit

  • Estimate multiplication products through 1,000 by rounding two- and three-digit factors to the nearest ten or hundred
  • Estimate multiplication products through 1,000 by using front-end estimation
  • Multiply two- and three-digit numbers by one-digit numbers with and without regrouping
  • Estimate multiplication products through $999 by rounding two- and three-digit factors to the nearest ten cents or dollar
  • Estimate multiplication products through $999 using front-end estimation
  • Multiply money amounts with products through $999

Divide by One Digit

  • Use multiplication facts to estimate quotients with 2- and 3-digit dividends and 1-digit divisors
  • Estimate quotients with 2- and 3-digit dividends and 1-digit divisors by rounding dividends to the nearest ten
  • Divide 2-digit dividends by 1-digit divisors with and without remainders
  • Estimate money quotients with 3- and 4-digit dividends and 1-digit divisors by rounding dividends to the nearest dollar

Fractions

  • Recognize and write fractions through twelfths
  • Compare fractions with like and unlike denominators through twelfths, and explain the reasoning
  • Recognize and write equivalent fractions through twelfths, and explain the reasoning
  • Estimate and write fractional parts of a whole or parts of a set
  • Write mixed numbers in standard and word name forms
  • Add and subtract fractions with like denominators through twelfths

Decimals

  • Recognize and write fractions expressed as tenths and hundredths
  • Recognize and write decimals expressed as tenths and hundredths
  • Compare and order decimals through hundredths
  • Add and subtract decimals and money amounts with and without regrouping
  • Identify and use numerical patterns to solve problems

Moving On in Math

  • Write numbers through 9,999,999 in standard,expanded, and word name forms
  • Add and subtract five-digit numbers with regrouping
  • Add money amounts with sums through $999.99 with regrouping
  • Explain divisibility rules for numbers divisible by 2, 5,and 10
  • Find missing digits in addition, subtraction, and multiplication problems
  • Solve problems using the order of operations
  • Choose the correct operation to complete a number sentence
  • Find the common factors of two numbers  
  • Divide two- and three-digit money amounts by a one-digit divisor without remainders
  • Multiply money amounts through $9.99 by a one-digit multiplier
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Number of Lessons and Scheduling

60 minutes

You might choose to split the lessons into smaller segments and take breaks as needed. K12’s online lesson tracking system allows you to pick up wherever you left off in any given lesson.

Total Lessons: 180

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K12 Scope & Sequence documents for each course include:

  • Course Overview (as seen above)
  • Course Outline
  • Lesson Time and Scheduling