Curated OER
Addition, Subtraction, Multiplication and Division of Real Numbers
In this math worksheet, students apply themselves to solve the problems with fractions and all the operations of real numbers.
Curated OER
Got These Properties? (Commutative in Addition/Zero in Addition and Subtraction)
Second graders examine the commutative property of addition and the property of zero in addition and subtraction. They complete an asessment worksheet to gain practice reading and working number sentences horizontally and vertically.
Curated OER
Addition and Subtraction Vocabulary Cards
In this math vocabulary worksheet, students learn 20 words or phrases that pertain to addition or subtraction. The words are in large font on vocabulary cards; there are no definitions here.
Curated OER
Addition and Subtraction Vocabulary Problems
In this addition and subtraction worksheet, students use the number sentences and clues to determine the numbers for each problem.
Curated OER
Addition And Subtraction Of Whole Numbers
In this addition and subtraction of whole numbers worksheet, students problem solve and calculate the answers to thirty mathematical equations.
Curated OER
Measuring Rainfall
In this activity, students will make a gauge to measure rainfall and see how much rain falls over several days.
Curated OER
Basic Crypto Systems
Students try to solve codes mathematically. The use of a code needs a key. Students try to decipher a code with a mathematical key. This requires focus and higher order thinking skills like analysis.
Curated OER
Real Life Problems-- Addition and Subtraction Word Problems
In this math worksheet, students use basic addition and subtraction to solve 20 real life word problems. Some strategies are given on the page. This is from the UK; money is in pounds and pence.
Khan Academy
Khan Academy: Subtract 1 or 10
Practice subtracting 1 or 10 from a 2-digit number (no regrouping). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Add and Subtract Fractions: Word Problems 1
Practice solving word problems by adding and subtracting fractions with like denominators. Gaby ate 2 slices of pie and Daniel ate 2. If there were 10 slices of pie all together, what fraction did they eat? Students receive immediate...
Khan Academy
Khan Academy: Subtract 10s and 100s (No Regrouping)
Practice subtracting 1, 10, or 100 from a number. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Teaching Treasures Publications
Teaching Treasures: Year One Timed Mental Math (Page 3)
Try to solve ten addition or subtraction problems in less than five minutes using this interactive worksheet. Immediate feedback is given. A suitable tool for use as a quick assessment.
Khan Academy
Khan Academy: Add 1 or 10
Practice solving problems like 34+1 and 34+10. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Addition and Subtraction Word Problems 1
Practice adding and subtracting to solve word problems. Numbers used are 20 or less. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Teaching Treasures Publications
Teaching Treasures: Year One Timed Mental Math (Page 2)
Learners are challenged to solve ten addition or subtraction problems in less than five minutes using this interactive worksheet. Immediate feedback is given.
Illustrative Mathematics
Illustrative Mathematics: Hitting the Target Number
The purpose of this task is to help learners develop flexible strategies for adding and subtracting within 20. Students will pick 5 number cards from pre-made cards labeled 1-10. Then, another student will pick a "target number" between...
Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Sums and Differences to 20
A guide to support parents as they work with their students in sums and differences to 20.
Khan Academy
Khan Academy: Relate Addition and Subtraction
Practice seeing how addition and subtraction are related. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.