Curated OER
Finding a Way
For this mental math worksheet, 3rd graders use mental math to find and solve each missing product, sum and/or difference in each of the 4 paths. Students answer 1 short answer question relating to the paths.
Curated OER
Unit 11 Year 5
Apparently unit 11 covers a range of topics related to problem solving, addition, and subtraction. This complete unit presentation is intended for use over a series of days or weeks. It contains numerous visual aids to accompany lessons...
EngageNY
One-Step Equations—Addition and Subtraction
Just one step is all you need to find success in solving equations. The 27th installment in a series of 36 teaches how to solve one-step equations involving addition and subtraction. Tape diagrams help future mathematicians in this task.
Curated OER
Mental Arithmetic
In this mental math worksheet, students answer 2 sets of mental math questions about writing whole numbers, place value, counting back and on in tens and addition and subtraction.
Curated OER
Mental Subtraction Methods
In this subtraction worksheet, students subtract problems using mental math methods such as tens groups, comparing problems, helping numbers, and more. Students complete 7 sets of problems.
Curated OER
Subtracting 2-Digit Numbers Mentally
In this subtraction worksheet, students subtract 2 digit numbers from each other using mental math. Students complete 12 problems and 9 comparison problems.
Curated OER
Mental Tests: Basic Operations
In this mental math worksheet, students answer problems using the four operations: addition, subtraction, multiplication & division. Problems are grouped in ten for a quick review.
New Zealand Ministry of Education
Addition and Subtraction Pick n Mix
Teach your class how to mentally solve whole number addition and subtraction problems using compensation from tidy numbers including equal additions. They use appropriate recording techniques and predict the usefulness of strategies for...
DataWorks
4th Grade Math: Multi-Step Word Problems
Solving word problems requires reading comprehension and math computation. Through an interactive slideshow presentation, fourth graders observe and follow each step toward solve multiplication and division word problems.
Curated OER
Mental Maths
In this counting worksheet, learners complete 22 fill in the blank problems where they are given a starting number and count by 1's, 2's, and 10's. Next. students answer 12 fill in the blank addition or subtraction problems where they...
Math Salamanders Ltd.
Subtraction Up to 20 — Sheet 2
Challenge your class with 20 subtraction problems. Learners will subtract single and double-digit numbers up to 20 with a number line.
Curated OER
Mental Math Strategies
In this mental math learning exercise, students read an information box that explains how to use breaking apart or compensation to solve addition or subtraction problems. Students add or subtract using mental math in 8 examples.
Curated OER
Mental Math Strategies
In this mental math worksheet, students study the detailed instructions and examples for adding or subtracting numbers using "breaking apart" or compensation. Students solve 17 mental math problems.
Curated OER
Subtraction Worksheet: Numbers to 19
In this subtraction worksheet, students solve 36 problems in which numbers below 20 are subtracted. The minuend has two digits and the subtrahend has only one.
Math Mammoth
Mental Math in Percent Problems
For this math worksheet, students are given 21 percentage problems which they are to work out mentally. There are story problems, tables and simple conversion.
Curated OER
Mental Math Blocks 2
In this math worksheet, students solve eleven math problems. Students solve the problems by using multiplication, division, subtraction, and addition.
Curated OER
Mental Math: Addition and Subtraction
Fourth graders exercise their minds in completing mental math skills of adding and subtracting by making multiplies of ten. They compute problems involving multiplication and division of whole numbers and addition and subtraction of...
Los Angeles County Office of Education
Assessment for the California Mathematics Standards Grade 2
Test scholars mathematic skills with an assessment addressing addition, subtraction, multiplication, place value, measurement, geometric shapes, expanded notation; and their ability to compare numbers, write number sentences, draw...
Common Core, Inc.
Multi-Digit Whole Number Subtraction
A thorough exploration into subtracting multi-digit numbers, this series of lessons is an excellent way to guide learners of any skill level. With a step-by-step lesson plan and straightforward assessment tools, kids are sure to...
BBC
Starship English and Math - Online Lesson Plans
Two online lessons, one in math and one in language arts, are here for you. In them, learners play online games which reinforce important skills in literacy and numeracy. The thing I like about both of these lessons is that they get the...
Curated OER
Addition and Subtraction
In this finding the sums and differences of horizontal problems activity, students add and subtract one-digit and two-digit numbers using mental math. Students solve 242 problems.
Curated OER
Add or Subtract (up to 50)
Do you add or subtract? It's up to your mathematicians as they fill in the symbol for 16 equations to make them true. The numbers in this section don't exceed 18. Next, learners answer six word problems by determining the missing addend...
Curated OER
Using Doubles
Bring this easy shortcut to your first grade addition lesson! By adding doubles (6+6, for example), and then adding or subtracting 1, kids learn how to solve simple addition problems with ease. This trick is especially helpful for...
Curated OER
Subtraction: Subtracting Tens
In this two-digit subtraction worksheet, students solve 30 subtraction problems. Students must write the answer in the blank for each problem.