Curated OER
Codebreaker Math
Students solve addition and subtraction problems and decipher and write messages using a code. They read and discuss an informational fact sheet about the Navajo code talkers from World War II, and decode and re-code messages using math...
Curated OER
A Secret Code
In this addition and subtraction worksheet, students solve for problems to complete the riddle about George Washington. Students solve 20 two digit problems of addition and subtraction with some regrouping necessary.
Curated OER
Mystery Math
Here is an interesting "trick" your young mathematicians can perform. They are taught how to find any number's "digital root," by following a set of detailed instructions. The process works for any number, and is the type of math puzzle...
Curated OER
Addition Relay
Third graders, in pairs, use a bag of counters which can be dried beans, squares of papers, etc.
Curated OER
Missing Addends - Inverse Operations
In this math learning exercise, student find the missing addend in 28 single and double digit addition problems and write the corresponding subtraction problem.
Curated OER
The 500 Problem
Young scholars explain face, place and total value of numbers as well as solve three-digit subtraction problems. Before trying answer the problem Students must be able to examine that the same digit is used to represent different amounts.
NTTI
Putting Together Ten
Groups explore sets of 10 items in two varieties (i.e. 3 white buttons and 7 black ones, or 5 bears and 5 bunnies). They brainstorm about their objects, write math sentences to represent what they have, and report their discoveries to...
Curated OER
Math Mammoth End of the Year Test - Grade 3
In this comprehensive diagnostic test worksheet, learners examine, study, calculate and solve 38 math problems. They work with a variety of basic math concepts and word problems.
Curated OER
Subtracting 3
In this subtraction worksheet, learners solve a set of 25 problems using 1 and 2-digit numbers and subtracting 3. A website reference for additional resources is given.
Curated OER
Subtracting Four
In this subtraction worksheet, students solve a total of 25 problems using 1 and 2-digit numbers and subtracting 4. A website reference for additional resources is given.
Curated OER
Subtracting Twos (A)
In this subtraction review activity, students use problem solving skills to solve 21 problems that require them to subtract 2 from various 1 digit numbers.
Curated OER
Subtract by Finding Difference-Counting On
In this subtraction worksheet, students solve a total of 10 problems, first "counting on" to solve, then determining whether to partition or count on to complete additional problems.
Curated OER
Carry and Borrow
Second graders complete basic math computations. In this addition and subtraction lesson, 2nd graders learn how to carry and borrow numbers when adding and subtracting. Students learn a carrying song to help them remember. Students...
Curated OER
Computer vs Human Problem
In this algebra worksheet, students compare the way a human would solve an equations as compared to a computer. There is one problem with a solution key.
Curated OER
Subtracting Within the Same Ten
In this subtraction worksheet, students subtract one digit numbers from one and two digit numbers with the same 10. Students complete 8 sets of problems.
Curated OER
Use Negative Numbers
In this problem solving instructional activity, learners read and solve 6 story problems pertaining to borrowing and paying back money. Students use instead simple subtraction and addition. No answers will be negative numbers.
Curated OER
Estimating Differences (Online Interactive)
In this estimating worksheet, students solve 20 problems in which two or three digit numbers are subtracted after rounding. Students round each number and then give an estimated answer. This is an online interactive worksheet.
For the Teachers
$1 Math
Captivate your class by having them find the value of their names, different zoo animals, musical instruments, etc.,with a mental math lesson. Using the coding formula listed, children learn to fluently estimate and calculate simple sums.
Curated OER
Rounding and Significant Digits
Practice rounding numbers to a certain decimal by solving in-class problems. Learners will solve several multiplication, division, addition, and subtraction problems while rounding to a specific decimal. They will also check their work...
Curated OER
Curriculum Links To Numeracy
Youngsters practice looking for the links to numeracy in their classes. This isn't a worksheet but a curriculum guide for an entire unit. Teachers can use any part of the resource to extend or inform their teaching practices related to...
Inside Mathematics
Graphs (2006)
When told to describe a line, do your pupils list its color, length, and which side is high or low? Use a worksheet that engages scholars to properly label line graphs. It then requests two applied reasoning answers.
Charleston School District
Scientific Notation Operations
How do you operate with numbers in scientific notation? The resource provides examples on how to divide and multiply with numbers written in scientific notation. The handout and video also cover the procedure for addition and subtraction...
Curated OER
Missing Addends
Where are all the addends? Addition novices solve 36 equations by filling in the single-digit addend to achieve the given sum. They reference several examples, each of which include object sets to help learners visualize the concept....
Curated OER
Year 6 Booster pg 4
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 algebra problems are solved.