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Compatible numbers to 20
Students practice theories dealing with equals sign used as a balance, inequality symbols and practice utilizing a box or some other geometric shape to represent an unknown number. They assess numeracy problems embedded in language-rick...
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Representing the Unknown
Student use mental math to solve linear equations. In this algebra lesson, students solve one and two steps equations. They write expressions using variables to identify the unknown.
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Division Terms, Zero and One
For this division worksheet, students complete division problems by filling in the missing numbers, writing the problems, and filling in a chart. Students complete 4 sets of problems.
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Ratios: missing number
In this ratios worksheet, students find the missing number in each ratio for numbers up to 10. Students complete 7 ratio problems.
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Corn Field Math
Students complete problems dealing with whole numbers, fractions and percents. After exploring the history of corn and related farming vocabulary, students work in pairs to solve multi-step problems. They incorporate the use of number...
Teacher Created Resources
Working with Algebraic Expressions
Learners understand that algebra is a branch of mathematics that uses symbols or letters to represent unknown numbers in problems. They also understand the definition for an algebraic expression. Make sure to click on the Download the...
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Representing the Unknown
Second graders solve number sentences and examine how to apply basic operations of mathematics to those problems. They also use symbols to represent unknown numbers and how they are used in equations.
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Bears in a Box
First graders count bears to predict missing addends. They analyze the missing addend sentence: 7 + ? = 10 and count up from 7 to 10 and check to see if there are 3 bears in the box.
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Unknown Element Project
Young scholars work with a partner to determine the identity of an unknown element based on given descriptions. Groups use classroom textbooks, encyclopedias, and science internet sites to identify their unknown element then write a...
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Joining (Addition) - Result Unknown
Having your learners make illustrations while solving a word problem will help visualize the problem they face. This worksheet challenges your class to solve for an unknown sum with multi-digit numbers
Fuel the Brain
Addition Change Unknown
Using pictures, words, or numbers can help your learners with this addition worksheet. The problems give an original number of an item, with how many more they want. They have to find the answer by using addition to reach the ideal number.
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Simplify Ratio: Word Problems
Use this story problems about ratio worksheet to have learners read word problems with given ratios and find the designated numbers or distances. They solve four problems.
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Decimals and Percents
For this decimals and percents worksheet, 8th graders solve 26 different types of problems that include expressing numbers as a decimal and a percent. Then they change each number to fractions and determine the unknown number for each...
Math Mammoth
Multiplication Problems
In this multiplication problems learning exercise, students problem solve a variety of multiplication exercises to work on their skills of multiplying mentally, finding missing factors and finding unknown numbers.
Fuel the Brain
Representing numbers and Separation (subtraction)- Result Unknown
Your learners will follow the given directions by drawing 3 shirts on the clothesline provided, and then by subtracting 1 that fell off to give the new number.
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Using Positive Numbers
In this solving equations instructional activity, students solve 70 short answer problems. Students solve each equation for the unknown variable by simplifying like terms and isolating the variable.
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Galileo's Thermometer: Measuring the Density of Various Unknown Liquids
Sprouting scientists explore the concept of density by making mass and volume measurements for five different liquids. From these measurements, they calculate densities. They apply their learning to explain Galileo's thermometer works...
Virginia Department of Education
Properties of Compounds and Chemical Formulas
Young chemists have unknown compounds they need to sort. Performing three different tests on each, the chemical behaviors they observe become the basis for data analysis.
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Task: Miniature Golf
"Fore!" All right, no one really yells this out in miniature golf, but this well-defined activity will have your charges using lots of numbers in their unique design of a miniature golf hole. Included in the activity criteria is the...
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Articles of Confederation Game
Why did the Articles of Confederation fail? Your historians will find out firsthand through this simulation activity, during which they will use money (consider using extra credit) to demonstrate the inherent flaws. It's simple: each...
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Patchwork Giraffe
In this math worksheet, 1st graders will focus on single digit addition. Students will complete eight problems and color the giraffe according to their answers for each problem.
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Using Multiplication Facts to Divide
If Joe knows that 3 x 6 = 18, and has 18 cookies in 3 bags, how can he use that fact to know how many cookies go into each bag? Learners examine this and five other division word problems. They begin with a multiplication fact that they...
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Nuclear Decay
In this nuclear decay worksheet, students read about alpha and beta decay and the isotopes formed by the reactions. Students solve nine problems including writing the equations for the decay of radioactive isotopes, identifying the...
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What Number? Percents
In this percents activity, students use work space provided to solve and find numbers whose percentages are given. Answers included on page 2.