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Curated OER
Missing Hundred Square
Kids are presented with the problem of finding the missing numbers to each of nine 100s squares. They'll need to subtract and add to make each puzzle equal 100. Great challenge or daily warm-up activity.
Curated OER
Math: Decimals / Money #1 (10-99)
In this elementary math worksheet, students review subtracting decimals as they complete 25 problems. The problems require students to subtract digits ranging from 10-99.
Curated OER
Word Problems and Bar Models
In this word problems worksheet, students solve word problems using bar models about money, days on a farm, and more. Students complete 6 problems total.
Curated OER
Subtraction and Addition Word Problems Made Easy
Third graders create addition and subtraction word problems for a partner to solve using marbles. They explain whether the problem is an addition, subtraction, "take away", "have and need", compare or "what is the rest" type problem.
Curated OER
Expanded Form and Place Value
Third graders are introduced to the concept of place value with place value tents. As a class, they are shown a number which they say outloud and write the number in expanded form. To end the instructional activity, they practice saying...
Curated OER
Frogs, Frogs, And More Frogs
Third graders review the life cycle of a frog. They use the computer to research specific information about their frog and write a descriptive paragraph using the information obtained on the computer. They access websites imbedded in...
Curated OER
A Frightening Mix of Math (D)
In this Halloween math learning exercise, students solve 36 problems in which two or three digit numbers are added or subtracted. There will be borrowing and carrying on this Halloween themed page that has monster graphics.
Curated OER
Addition and Subtraction Practice
For this addition and subtraction worksheet, students solve 5 problems set up in horizontal form, then solve 5 word problems. All problems add or subtract using 4 digit numbers.
Curated OER
Using a Hundreds Chart
Youngsters participate in three activities using the hundreds chart. They will choose numbers to add up to one hundred. Whoever gets the most combinations wins. Two variations of the game are supplied.
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Using Addition to Subtract
In this using addition to subtract worksheet, students, working with a partner, practice problem solving six word problems and equations.
Curated OER
Mental Arithmetic Sets 3 and 4
In this mental arithmetic worksheet, 3rd graders answer 20 short answer questions related to place value, addition, subtraction, and skip counting.
Curated OER
Addition And Subtraction Facts With 6
In this addition and subtraction facts with six worksheet, pupils write the fact families in which the sum is six. Students write the three numbers for the fact families at the top of each of the four columns. Pupils fill in thirty three...
Curated OER
Addition and Subtraction, Multiplication and Division Review
Students must use their mathematical reasoning skills in order to make four math statements true by filling in the boxes with the correct digits. Addition, subtraction, multiplication, and division problems appear.
Helping with Math
Addition: Number Bonds to 20
Pupils fill in the missing addend to an addition problem that adds up to 20. This number could be a one-digit or two-digit number. They complete a total of 41 missing addend problems. Answers are available.
Curated OER
Tracking the Salt Front
Using the Hudson River as the focus, learners discuss the difference between salt water and fresh water environments, analyze maps and graphs, and complete addition and subtraction problems. This lesson plan comes with a wealth of...
Illustrative Mathematics
Building toward fluency
Here is a great learning task that focuses on the development of areas in computational fluency including strategies in mental math. Young learners are guided through a list of addition expressions that help them visually understand the...
Curated OER
My Math Curse!
Math novices examine how math can help them in real-world situations. They listen to the book The Math Curse by Jon Scieszka, solve various word problems from the book, explore various math websites, write original math word problems,...
Curated OER
Number Line Game
Students understand number line concepts and the addition of positive and negative integers. In this number line lesson, students create and use a number line to play a game. Students will use different colored dice to represent positive...
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Subtraction Stepping Stones
In this subtraction instructional activity, students subtract the complete the subtraction equations by filling in the missing numbers for the 5 problems.
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Addition: 3-Digit Sums (Carrying Tens)
In this addition practice worksheet, students improve their math skills as they solve 30 problems that require them to add 2-digit numbers to 2-digit numbers
Curated OER
Rice Math Problems
Third graders practice solving math equations using rice as their subject. They translate situations involving rice into math equations in order to solve them properly. They also discover and practice using math vocabulary terms...
DK Publishing
Tricky Word Problems - Choosing the Operation
Decipher the equations in these addition and subtraction word problems. Two examples at the top of the page guide second graders as they solve the rest of the problems. There is no space to write out the equation, but there is a place to...
Curated OER
How to Use Expanded Form
Third graders write numbers in expanded form. In this math vocabulary lesson plan, 3rd graders write numbers in expanded form using words only, words and numbers, and numbers only. Each student is given three dice to roll. They then...
Curated OER
Subtraction: One Digit from Two Digits With No Regrouping
For this subtraction worksheet, 3rd graders find the differences to 30 problems in which they subtract a one digit number from a two digit number. They regroup as needed.