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Curated OER
Counting to 100: Step-by-Step
Introduce your pupils to the hundreds chart! This pair of worksheets is designed to walk them through the patterns they see in the chart as they count by ones and 10s. They fill in missing numbers on a hundreds chart, using guided steps....
Curated OER
Add and Subtract within 1000
There are some missing parts in these addition and subtraction problems. Scholars start by completing two number sentences, each involving all three-digit numbers. Then, they examine another number to determine the value of the tens...
Curated OER
Study Buddies: Adding Two-Digit Numbers
Some times a simple lesson is all you need. Here are 2 worksheets that can be used as a lesson on problem solving, addition, and partner work. The first worksheet has learners use a tens and ones charts to practice adding simple...
Maths Blog
Adding/Subtracting Whole Numbers in Your Head
Exercise those mental math muscles! This activity contains 10 addition and 10 subtraction problems which require learners to compute sums or differences in their heads. A quick review at the top of the page provides a strategy based on...
Curated OER
Mentally Add Larger Numbers
Using what they know about adding 10s and 100s, learners attempt to mentally solve 18 addition problems. Each problem requires them to think of the nearest 10 or 100, add them together, then add the remaining units.
Curated OER
Study Buddies: Multiplying by Two-Digit Numbers
Learners solve a multiplication problem in which they must multiply two 2-digit numbers with the help of a "Coach". Pupils follow a step-by step process and notes are provided for the coach.
Granite School District
Activities that Build Number Sense
Have fun while building the number sense of young mathematicians with this list of ten-frame learning games. From developing cardinality and counting skills to learning place value and basic addition strategies, ten-frames are excellent...
Scholastic
Study Jams! Order Whole Numbers
Mia's been practicing for the hundred yard dash and wants to know if she's improving. Help order her race times from greatest to least while learning how to compare numbers using place value. A variety of additional examples are included...
Curated OER
Using Partitioning to Double or Halve Numbers
Here is an engaging presentation that challenges your mathematicians to use the techniques of partitioning and halving in order to double or half numbers. After each technique is explained, learners are given a series of numbers to try...
Math Worksheets Land
Add and Subtract Multi-Digit Whole Numbers
Help young mathematicians see the value in addition and subtraction. Offering one addition and one subtraction problem, this worksheet walks students step-by-step through the solutions of each, starting in the ones place and working...
Curated OER
Counting On In Tens
How can you start at 13 and end up at 43? By adding 10s of course! Kids complete 4 different number lines by adding 10s. Each line begins with a teen number and is 4 numbers long. An answer key is included.
Math Salamanders Ltd.
Place Value: Tens and Ones
In this place value learning exercise, students complete 12 math problems by counting tens and ones. They then add the tens and ones values to create a two-digit number.
Los Angeles County Office of Education
Assessment for the California Mathematics Standards Grade 1
Here is an assessment designed to test mathematicians' knowledge of writing numbers, comparing numbers, skip counting, solving addition and subtraction problems; along with measuring objects, telling time, identifying shapes, reading...
West Contra Costa Unified School District
The Power of Ten: Building a Magnitude Model
Add visual representation to teaching place value with a magnitude model. Using adding machine tape, pupils build a linear place value strip from 1 to 100.
Curated OER
Add One-Digit Numbers to Two-Digit Numbers
For this addition with carrying worksheet, students solve 7 problems in which two digit numbers are added to single digit numbers with carrying.
Curated OER
Investigation - Who is Right?
Third graders investigate two mathematic scenarios and determine which is correct. They compare adding columns and places (such as the tens place, hundreds place, and so on) and familiarize themselves with how to add larger numbers.
Illustrative Mathematics
Party Favors
Pia is putting stickers into party bags. She starts by putting 10 stickers in each bag, and over the course of a week she adds several bundles of ten stickers to each bag, as well as making more bags. Second graders must find the number...
Curated OER
More and Less
Mental mathematicians add and subtract 1, 10, and 100 from sets of numbers. Each set of one, two and three-digit numbers gives scholars a chance to practice their addition and subtraction skills. There are 62 whole numbers in all. What...
Curated OER
Add One-Digit Numbers to Two-Digit Numbers
In this addition review worksheet, students practice adding 1-digit numbers to 2- digit numbers as they solve 3 addition problems.
Curated OER
Two-Digit Numbers Ending in 8 or 7
In this mathematics instructional activity, students circle the dots to form a complete ten and compare their problem to the one with just ones' digits. Then they add each problem and write down the corresponding problem with just the...
Curated OER
Two-Digit Addition
In this addition worksheet, 2nd graders solve 18 addition math problems with two-digit numbers. Students utilize the tens and ones models and the process of regrouping.
Fuel the Brain
Brain Boosters - Add Ten on a Number Line
Encourage learners to use pictures, numbers, or words to solve two-word problems in which they count by 10's using a number line. They tell the total number of items the child has in each problem by starting at a given number and adding...
West Contra Costa Unified School District
Adding Numbers
Support math instruction at home with a helpful reference sheet designed for parents. Three pages cover the subject of addition with written details and labeled pictures.
Curated OER
Addition
Looking for some straightforward addition practice? You found it! Mathematicians calculate sums between double-digit addends, using examples as guidance. There are 12 problems total. Next, they answer two simple addition word problems....