Curated OER
Ten More and Ten Less
Get learners to analyze two-digit numbers based on place value, and use manipulatives to add and subtract both 1 and 10. A place value chart is available, and you can project it during guided practice. Through visualizing...
Curated OER
Math Lesson Plan : Finger Counting
Create a class of mathematics master. They practice addition to ten until they have mastered the skill. They use their hands to add numbers and eventually find the missing addend to make a sum of 10. They also subtract a single digit...
Curated OER
Practice Writing Three-Digit Numbers
This online interactive activity defines what two-digit and three-digit number are and the place values found in each. A practice activity helps build proficiency with this skill by having learners fill in the 21 blanks with the...
Curated OER
Addition with Pennies
With 6 pennies as the constant number in each equation, students practice adding various single-digit and double-digit amounts in these 9 problems. The large pennies on the instructional activity are helpful counters for young learners.
EngageNY
Decimal Expansions of Fractions, Part 1
Is it possible to add infinitely long decimals? As pupils complete the examples in the ninth lesson plan of this 25-part series, they determine that adding these decimals cannot be done without error. Their task is then to determine the...
Curated OER
Multiplying
There is a step-by-step example here to help young multipliers solve 12 equations, all of which have one 2-digit and one 1-digit factor. The method displayed encourages breaking the two-digit number into tens and ones, multiplying each...
Curated OER
Tens and Units
Images of base ten blocks are used to reinforce counting past 10. Learners will count along, adding units to each 10 as they go from 10 to 30. Each number is shown on a 100 block, as blocks of 10s and 1s, and in numeric form as...
Curated OER
Pattern Puzzles
A short video introduces place value in addition and subtraction. As a class, your students identify all even numbers up to one hundred and explain the pattern. They use addition strategies to fill in the missing numbers on the number grid.
Curated OER
Mentally Add Two 2-Digit Numbers pg. 1
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.
Curated OER
Adding 0 and 1
In this adding activity, learners practice adding one-digit numbers. They add numbers in the zero and one fact family. There are 30 problems on this one-page activity. An answer key is included.
Curated OER
Word Addition and Subtraction
In this adding and subtracting activity, students read addition equations and write answers in manuscript and subtract one-digit numbers from two-digit numbers. Students solve 8 problems.
Math Salamanders Ltd.
Adding 1s, 10s, 100s, and 1000s
In this addition activity, students complete a 13-row chart. They start with three or four-digit numbers and add 1, 10, 100, or 1000 to each number to fill in the chart. The last four questions require subtraction because the initial...
Curated OER
Horizontal Mixed Addition and Subtraction Using Numbers Between 1 and 100
In this addition and subtraction worksheet, students solve 12 mixed problems in which two digit numbers are added and subtracted, with and without regrouping. This is an online interactive worksheet that can be printed.
Curated OER
Addition Exercises
In this addition worksheet, students solve 10 problems in which three single digit numbers are added. Students then write the answer in the box.
Curated OER
Horizontal Mixed Addition and Subtraction Using Numbers Between 1 and 100
In this addition and subtraction activity, students solve 10 problems in which two digit numbers are added or subtracted. Problems are in a horizontal format and may need to be rewritten. This is an online interactive activity that can...
Curated OER
Adding 1 and 2 digit numbers
In this addition worksheet, students add one and two digit numbers together to find a sum without regrouping. Students complete 200 problems.
Curated OER
Subtraction: Two Digit by Two Digit - No Regrouping
In this subtraction worksheet, 2nd graders find the differences in 30 two digit by two digit problems in which they do not have to regroup.
Curated OER
Double Digit Addition 1
In this addition worksheet, students solve 20 problems in which two digit numbers are added with and without carrying. There are no examples on the page.
Curated OER
Worksheet #9 Two Digit Addition With Regrouping
In this addition worksheet, students solve 20 problems in which two digit numbers are added. There will be carrying on this page.
Curated OER
Addition With One and Two Digit Numbers
In this addition with one or two digits worksheet, 2nd graders complete 10 horizontal addition problems. They place the sums in the shape at the end of the equation.
Curated OER
Two Digit Addition Without Regrouping
In this addition learning exercise, students solve 20 problems in which two digit numbers are added. There will be no regrouping on this page.
Curated OER
Adding Two- and Three-Digit Numbers
In this addition worksheet, 4th graders add together 13 two and three-digit numbers with two and three numbers in each addition math problem.
Curated OER
One-Digit Addition; No Regrouping Valentine's Drill
Valentine's Day pictures decorate this addition practice worksheet, in which students add single digit numbers to single digit numbers. There are eighty problems in total, making this a good review activity or a fun timed math drill. An...
Curated OER
Adding Three Digits
Second graders use cards to create 3-digit addition problems and add them together. In this addition lesson plan, 2nd graders add numbers with and without regrouping. Students use a deck of cards to play an addition game in pairs. A very...