Curated OER

#### Addition and Subtraction: numbers to 20

Does your school encourage learning math facts or fast facts? If it does you can definitely use this resource. There are 20 lists, each list contains 10 problems, and each problem set focuses on adding and subtracting specific numbers,...

Math Solutions

#### Race to 20

And they're off! Working in pairs, young mathematicians roll dice to see who can fill in their double ten-frames first. When students finally fill in their arrays, they create addition number sentences that represent their rolls, helping...

Curated OER

#### Addition Up to 20, Sheet 3

Adding numbers up to sums of 20 is the focus of this worksheet. Pupils complete a set of 24 problems by adding numbers to 20. A number line and reference website is given for additional activities.

Curated OER

#### Add up to 20

In this adding up to 20 worksheet, students try to match each line of the rectangle to add up to 20 using any whole numbers they choose. Students have 6 blanks to fill in and 2 questions at the end.

Curated OER

#### One More or One Less?

Hook new mathematicians with a candy-themed approach to addition and subtraction. They examine 10 numbers (not exceeding 19) printed on candy wrappers. For each, learners calculate and record numbers with valuesÂ one more and one...

Maths Blog

#### Make 20

There are quite a few ways to make the number 20 through addition. Learners fill in missing addends to reach the sum of 20 then answer additional related questions. This is a good resource because it has the class both add to 20 and...

Curated OER

#### Practice Adding

Challenge your first graders with 24 addition problems. The first section of problems use numbers from 5 to 64, while the second section contains problems adding three numbers together. The last few problems prompt young mathematicians...

Houghton Mifflin Harcourt

#### Addition and Subtraction Facts to 20

First graders act out number stories from number cards. In order to learn about addition and subtraction up to 20 lesson, learners become the manipulatives and line up to show the number stories.

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 Â 41 missing addend problems. Answers are available.

Curated OER

#### Fraction X - Adding Unlike Denominators

Adding fractions with unlike denominators is a difficult process to master. This fine presentation does a terrific job of leading young math whizzes through the steps necessary to perform this calculation. The slides have clear graphics,...

Print and Practice

#### Adding to 20 With Andy

For this addition to 20 worksheet, students complete a set of 24 problems, adding 1 and 2-digit numbers with sums to 20. Answer key is included.

DK Publishing

#### Adding Fractions

Fractions can be tricky, so be sure any independent practice worksheets you assign guide scholars through steps like this one. There are two examples showing mathematicians how to add fractions and reduce the answer to simplest terms....

Smithsonian Institution

#### A Ticket to Phillyâ€”In 1769: Thinking about Cities, Then and Now

While cities had only a small fraction of the population in colonial America, they played a significant role in pre-revolutionary years, and this was certainly true for the largest city in the North American colonies: Philadelphia. Your...

Common Core Sheets

#### Adding and Subtracting Negative Numbers

As an assessment or worksheet this resource has 10 versions of adding and subtracting negative numbers. Each version comes with two options, one with an answer choice box and one without. Let this resource do the work for you when...

Curated OER

#### Adding and Subtracting Fractions

Fifth graders put their fraction knowledge to work by reading word problems and deciding whether to add or subtract the given fractions. Terms such as combined, total, difference, and left indicate which operation to use.

Curated OER

#### Sets Of

Represent multiplication as sets of items for beginners to this concept. They look at six familiar object sets and determine the total number of legs by counting the sets. There is some scaffolding here, as the first is done for them and...

Kiz Math

#### Who Wants to Win Millions - Addition

Some excellent practice in adding a variety of numbers awaits your class in this engaging Jeopardy-style game. They can earn hundreds of dollars by answering questions correctly. The categories include: Adding One, Two, and Three-digit...

Curated OER

#### Know By Heart Addition Facts To 20

In this addition worksheet, learners solve the 56 addition problems. They are each in groups of 8 and students record how many seconds it took to get each group done. The problems all involve adding 2 single digit numbers together. The...

Curated OER

#### Adding Decimals

Show scholars the practical uses of adding numbers with decimals as they add measurements and amounts of money. The first 12 equations are written vertically with half the sums requiring a dollar sign and half a unit of measurement. The...

Curated OER

#### Adding Fractions

All of these fraction pairs have common denominators, so adding them up is a bit simpler. There are two examples demonstrating both a mixed number and reducing to simplest terms. Scholars add up 28 fraction pairs, simplifying when...

Curated OER

#### Adding Decimals

Adding decimals can be simple; show scholars the practical uses of adding numbers with decimals as they add measurements and amounts of money. The first eight equations are written vertically with some sums requiring a dollar sign, some...

Curated OER

#### Fraction X--Adding Unlike Denominators

In this math PowerPoint, the process of adding fractions with unlike denominators is broken down into a logical, easy-to-follow sequence of steps. Definitions and examples of multiples, least common multiple, and least common denominator...

Curated OER

#### Adding Fractions

The steps are laid out in these fraction addition practice problems. Scholars add fractions with common denominators, making sure to reduce to the simplest form. For all of these, that means turning a simplified improper fraction into a...

Curated OER

#### Adding Up

Make addition visual in order to help beginners understand the concept. They add up beads on a string, examining an example before trying it on their own. Learners fill inÂ addendsÂ and sums for these, and sometimes both. Although...