Worksheet
Curated OER

Know By Heart Addition Facts to 20

For Students 1st - 2nd
Some people call them fast facts and some call it recall with automaticity, test your class with this timed basic addition facts worksheet. It includes 7 sections of 8 addition problems each focused on a different set of problems.
Worksheet
Curated OER

Mentally Add Two 2-Digit Numbers pg. 1

For Students 4th - 6th
Mental math addition is the focus of this worksheet. Students apply a strategy outlined in the worksheet to find the sums. In this worksheet, students find the answers for twenty problems. Answers appear at the end.
Worksheet
Curated OER

Addition Strategies: Compensation

For Students 3rd - 4th
In this math learning exercise, students learn the addition strategy of compensation: adding an easy number like 10, 20 or 30 and then subtracting a very small number like 1 or 2. Students solve 12 problems on the page.
Worksheet
Curated OER

Mental Maths

For Teachers 2nd - 4th
In this counting worksheet, students 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...
Worksheet
Curated OER

Early Mental Math: Practice

For Students 1st - 2nd
Pupils start from a given number and count forward by 1s, 2s, and 10s. They "make ten" in 4 addition problems, and add or subtract 2 in the rest. Finally, they circle the odd numbers in a list from 1-14.
Worksheet
Curated OER

Math Mammoth End of the Year Test--Grade 1

For Students 1st
In this first grade math assessment worksheet, 1st graders complete 22 math problems based on the topics that were taught in first grade. The topics include telling time, solving word problems and addition and subtraction computation...
Worksheet
Curated OER

Mental Math Skills

For Students 2nd - 3rd
In this mental math worksheet, students use a number line to count backwards and forwards, add doubles, add and subtract one, and add one-digit numbers. Students solve thirty problems.
Worksheet
Curated OER

Mental Maths

For Students K - 2nd
In this mental math practice worksheet, students fill in the 10 blanks as the count backwards and forward. Students also solve 20 addition problems.
Worksheet
Curated OER

Think of a Number

For Students 4th - 6th
In this math worksheet, students engage in a mental math activity. Student think a number and follow several computations with that number and always come up with the answer 9. Students discuss why this happens.
Worksheet
Curated OER

Twist and Check Times Tables

For Students 3rd - 5th
In this math worksheet, students look for the solutions to the multiplication tables and use the game cards to complete the problems.
Lesson Plan
EngageNY

An Appearance of Complex Numbers 2

For Teachers 11th - 12th Standards
Help the class visualize operations with complex numbers with a instructional activity that formally introduces complex numbers and reviews the visualization of complex numbers on the complex plane. The fifth installment of a...