Curated OER
Add with Zero
In this math word problem practice activity, students sharpen their addition skills as they find the sum in 6 story problems that require them to add with 0.
Curated OER
Number Lines
First graders examine the number line as an addition strategy. In this math lesson, 1st graders create a number line and use it to help them solve addition problems.
Curated OER
Adding 0 Practice #1
In this addition worksheet, students find the sums to 35 single digit, vertical addition problems in which 0 is an addend. They add the numbers 1 through 9 to 0.
Curated OER
Number Sentences
In this math activity, students solve the problems that call for the completion of the number sentences by finding a sum for each set.
Curated OER
Number Line Addition Problems
In this addition worksheet, students use a number line to help them find the sums to 12 single digit addition problems. They use a number line that contains the numbers 0 - 10.
Curated OER
Cubes, Sums and a Little Fun
First graders, with partners, create and solve math problems using number and unifix cubes.
Curated OER
Addition Sentence Match Worksheet
Beginners to addition will benefit from this twist on number sentences. For each of the six addition problems, they begin with the sum and examine eight pairs of addends, circling all that equal the number. This will get your class...
Curated OER
Add Positive And Negative Numbers
Scholars investigate the concept of adding positive and negative numbers. They practice adding using the number line for scaffolding. This can be done as a game for younger learners, but may also be helpful for engaging the older pupils.
Curated OER
How to Use the Rules of Divisibility and Estimation
Number patterns help your kids learn divisibility and estimation rules. This activity aims to strengthen their math fact memorization skills by presenting several rules they are expected to memorize through practice.
Illustrative Mathematics
Make 9
Learning how numbers are put together as parts and wholes is a big step in building the foundational number sense of young mathematicians. Here, children are given a number less than 10 and are asked to find as many pairs of numbers as...
EngageNY
Informal Proof of AA Criterion for Similarity
What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...
Illustrative Mathematics
Complex number patterns
Start off with the definition of the imaginary number i, then have your class practice simplifying expressions involving powers of i and look for patterns. See how the cyclic nature of powers of i translate to sums of powers of i.
CK-12 Foundation
Sums of Mixed Numbers: Split the Addition
Five questions challenge scholars to add mixed numbers. A tool creates a visual model that separates whole numbers from fractions parts. Problem types include fill in the blank, true or false, and discussion.
Curated OER
Addition
Each of these addition equations involves two addends that are multiples of 10. Although there isn't any regrouping necessary, some of the sums are three-digit. The first 16 of these 28 equations are vertically oriented and the second 12...
DK Publishing
Addition with 3-Digit Numbers #1
Once your mathematicians can add two-digit numbers, it's time to bring on the three-digit addends. Here are 20 practice problems, each involving two whole-number addends. Learners do not need to regroup for any of these, and they have...
Curated OER
Investigation-Reasoning and Proof
Third graders determine the outcome of each of the following situations and justify their findings: even number + even number = ?, even number + odd number = ?, odd number + odd number = ?, and odd number + even number = ?.
Curated OER
Odd or Even?
There are multiple objectives at play here as scholars solve addition and subtraction problems and determine whether the sums and differences are odd or even. As they solve these, encourage pupils to observe patterns. What happens when...
Curated OER
Addition Drills, part 4
Show kids that addition has real-life applications as they add up measurements and money. There are some examples here demonstrating regrouping and including units in an answer. They complete 20 measurement addition problems, each with...
Curated OER
Fractions and Rationals
Upper elementary and middle schoolers solve 16 types of problems to include writing fractions to represent shaded portions, writing a mixed number to represent certain points on a number line, and changing equivalent mixed numbers to...
Curated OER
Addition Drills
Begin adding two-digit numbers with young mathematicians using this set of straightforward equations, none of which require regrouping. All have two-digit addends, and one sum is a three-digit number. Scholars can reference three...
EngageNY
Characters Changing Over Time (Chapter 10: "Las Papas/Potatos")
Engage further in Esperanza Rising with a focus on close reading and metaphor. Class members zero in on the tenth chapter, examining characters and big ideas. Pupils discuss the text in small groups and as a whole class, and participate...
Curated OER
Finding 10s
For beginners to addition, sets of objects are the ideal way to make this concept understandable. For each of these sets they ring 10 and count the remaining. Then, scholars fill in the addends as 10 and the remaining number. The sums...
Curated OER
Properties of Real Numbers
In this properties of real numbers worksheet, 9th graders solve and complete 30 different problems that include identifying and using various types of properties. First, they define each property by stating an example for each one...
Curated OER
Number Bonds: 1-Digit Addition
In this 1-digit addition worksheet, students fill in blanks and circles, making number bonds and solving addition problems, match numbers to make given sums and complete 2 number puzlzles.