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Chemistry 231, Exam 3
This exam is aimed at assessing college level organic chemists. Ten problems are to be solved and include drawing molecular structures, assessing degrees of saturation, ordering alkenes according to stability, and explaining chemical...
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The Pre-Civil War Era (1815–1850)
For this online interactive U.S. history worksheet, students respond to 9 short answer and essay questions about 19th century America. Students may check some of their answers on the interactive worksheet.
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Practice Makes Perfect
For this subtraction and addition worksheet, students solve 4 problems in which subtraction or addition is used to solve story problems. There is regrouping on the page.
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Add or Subtract
In this addition and subtraction worksheet, students add or subtract the single, two, and three digit problems. Students use the provided space to solve the problems. Students solve 28 problems.
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Christmas Themed Math Word Problems 0 to 40
In this addition and subtraction worksheet, students read and solve Christmas themed word problems 0 to 40. In this fill in the blank worksheet, students show their work to solve two word problems.
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What Numbers Do Digits Represent
For this place value worksheet, students write down the value of the number underlined in the larger numbers. For example, 390 945 will be provided and students write down 40. They then use a calculator to solve addition and subtraction...
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Number Words
In this number words activity, students fill in the words that represent the numbers. Students write 10 words for the numbers total.
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Which way?
In this comparison worksheet, students complete addition and subtraction problems and then decide if the answer is greater or less than a given number. Students complete 15 problems.
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What's in the Gift?
In this Christmas addition learning exercise, students supply a missing "gift" addend to complete a set of problems. A website reference for additional resources and answers are provided.
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What Must Be Added?- Mental Math
In this mental math activity, 4th graders determine what needs to be added to each number to make the given sum using mental math. They work with multiples of 100 and 1000.
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Estimate Sums
In this estimating sums worksheet, learners solve 6 word problems where they estimate the sum of 3 digit numbers by rounding to the nearest 10, 100 or 1000.
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Estimating
In this estimating worksheet, students review how to estimate and round numbers. Students then estimate the three number addition problems by rounding the numbers to the nearest hundred. Students then find the exact answer. Students...
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Approximate Answers By Rounding (pg. 1)
In this rounding number worksheet, students pick the best approximation using rounding for 4 equations, work out approximate answers for the sums by rounding to the nearest thousand in 5 problems and answer 3 place value rounding word...
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Subtracting Integers (II)
In this subtraction instructional activity, students complete subtraction problems containing parenthesis, up to 3 digit numbers, and negatives. Students complete 10 problems total.
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Multi-Digit Counting
In this math worksheet, students get comfortable counting to 990 by filling in the blank spaces in number series. Students count the larger numbers in order, filling in missing spaces. The number series segments begin at 500 and do not...
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Fill- In Multiplication Grid Problems 30% Open
In this multiplication worksheet, students fill in a multiplication chart with products from the factors 1 to 12. The chart is 70% filled in and students supply the remaining products.
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Animal Issues: Let's Talk Turkey
Thanksgiving means an untimely demise for thousands of turkeys every year. This turkey Q and A provides nine questions bringing facts and statistics of turkey consumption to the discussion table. There is an answer key that provides full...
San Francisco Public Utilities Commission
Desalination: Turning Salt Water into Fresh Water
How does San Francisco supply its citizens with enough water, even during a drought? Learn about reservoirs and why desalination could be a good solution with a reading passage about water conservation. After kids finish the...
Fuel the Brain
Addition
Having your youngsters learn more advanced addition will help them in solving these 2-digit and 3-digit addition problems. By calculating miles traveled and box tops collected, they will be eager to find the sums!
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Joining (Addition) Result Unknown
Pupils will put their addition skills to the test by solving these word problems. They are asked what the unknown solution is based on the given number "plus one more."
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Decimal Addition Level 4
In this math instructional activity, learners add decimal problems up to four places while lining them up correctly. The skill of recognizing place values is practiced.
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Math Club Worksheet #5b Warm-up Let's Practice Counting
In this counting practice instructional activity, 2nd graders practice adding numbers in which one place value is added to each addend for example 1+11+111+1111=?. They do this with ones and threes to the hundred thousands place.
Fuel the Brain
Separate Result Unknown: Addition & Subtraction
Have you done enough chores to earn the right amount of money for the things you want to buy? Have your youngsters use addition and subtraction to determine if Brady and Abigail have enough money to buy their preferred items!
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Joining (Addition) & Separating (Subtraction) - Result Unknown
How much is the total? How many more is left? These basic questions are asked of students through two story problems that involve catching fish on a weekend fishing trip and goal of reading a certain number of books. Your learners will...