Math Salamanders Ltd.
Subtracting 1, 10, 100 and 1000
For this subtraction activity, students use the given number in the first row to practice their subtraction skills. Students complete the chart by subtracting 1, 10, 100, and 1000 from the first number.
Curated OER
Analysing a game
Learners play a game called 'Limit 2' and analyse their moves in order to establish a winning strategy. The subtraction game in this activity is one of a number of games in a unit called 'Analysing games' in the above publication.
Curated OER
Counting Up- Crossing the Thousands
In this subtraction worksheet, students solve ten problems in which two 4 digit numbers are subtracted mentally. Students count on from the smaller number.
Curated OER
Add and Subtract Decimals
In this decimal worksheet, students read about adding and subtracting, then complete a set of 31 problems, adding, subtracting, solving for values of expressions and solving equations.
Curated OER
10 More or 10 Less
Practice adding and subtracting 10 with this outer space worksheet. On the top, scholars match digits floating in stars with sums inside a spaceship. Next, they do the same with subtracting 10, connecting numbers to differences. These...
Curated OER
Mental Addition and Subtraction
Fourth graders, while in the computer lab, practice the concepts of mental addition and subtraction by participating in an online game that stresses addition and subtraction. They have sixty seconds to answer as many questions as...
Curated OER
Constructions and Loci
In this constructions and loci worksheet, learners mentally calculate subtraction, addition and division problems. This two-page worksheet contains 30 problems. Answers are provided.
Curated OER
Mental Addition And Subtraction
Sixth graders, while in the computer lab, participate in the game ArithmAttack and complete as many additions and subtraction equations as they can in sixty seconds. They access the web site Mathfrog.com and begin their adventure with...
Curated OER
Finding a Difference
Learners find a small difference by counting up from the smaller to the larger number. They count the ones that don't match, lay them horizontally to match them to the orientation of the number line and show the two numbers on...
Curated OER
Circle Drill
In this math facts worksheet, students read about using the circle drill chart to practice addition facts, multiplication facts, and subtraction facts. Student use the blank chart to practice the skill.
Curated OER
Compatible Numbers To Ten
Pupils solve both addition and subtraction facts and discover the relationship between adding and subtracting equations. Students read real life word problems, extrapolate needed information, and write equations to solve the story...
Curated OER
Water Bucket Relay
Third graders, in teams, play a subtraction game called Water Bucket Relay.
Curated OER
The Number Tool Box
In this solving a math terms crossword puzzle worksheet, students read the clues across and down and write the math terms in the blanks. Students write 19 answers.
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
Number Line Math
Second graders use a number line to practice subtraction. In this subtraction activity, 2nd graders use a number line to count backwards. Students participate in mad math activities and solve problems.
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.
Math Mammoth
Distributive Property
In this math activity, students are given 30 problems to solve involving the distributive property, variables, parentheses, and area problems. The final set of problems asks students to solve problems mentally, without writing them down,...
Curated OER
When Close Enough is Good Enough
Young scholars describe the difference between an estimate and a guess. They create reasonable estimates based on observation and hands-on activities. They synthesize estimated based on interaction with online activities.
Curated OER
Units of Measure
In this units of measure worksheet, students mentally convert measured units within the metric system. This three-page worksheet contains two-pages. Answers are provided beside each question.
Curated OER
Dividing by 4's
Third graders explore math functions by completing problem solving activities. In this division instructional activity, 3rd graders utilize the division strategies acquired earlier to divide multiple digit numbers by 4's. Students...
Curated OER
The Fundamental Theorem of Calculus and Properties of the Definite Integral
Learners discuss the importance of fundamental theorems in math. In this calculus lesson, students define the fundamental theorem of calculus and discuss why it is so important they understand it. They work problems to model how this...
Curated OER
Topsy-Turvy Math With Rational Numbers
Fourth graders complete a worksheet. As a whole class, 4th graders hear a lecture and complete a worksheet on factors, multiplicative inverses and reciprocals, finding the quotient of two fractions and the division of fractions to...
Curated OER
Life is Full of Problems
Pupils use the problem solving strategy of guess and check to investigate math word problems. They determine which problem solving strategy or strategies would work best in problem situations.
Curated OER
Simplify Expression Using the Order of Operations
Allow learners to explore both the right and wrong way of completing equations with the order of operations. They discuss how the order in which operations are performed affects the outcome of a problem. A fun "trick" using order of...