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Have you ever heard someone say "I'll be back in a jiffy?" Did you wonder how long that really meant? A jiffy is a unit of time that is equal to 1/100th of a second. Now when someone says they'll be back in a jiffy, time them and see if they really are that fast!

# Adding Time & Weight Worksheets

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Basic Lesson
Introduces the addition of time and weight.
Standard: MATH 4
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Intermediate Lesson
This lesson demonstrates how slightly complex units of time and weight with the use of fractions.
Standard: MATH 4
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Independent Practice 1
Students practice adding 20 time & weight problems. The answers can be found below.
Standard: MATH 4
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Independent Practice 2
Another 20 adding time & weight problems. The answers can be found below.
Standard: MATH 4
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Homework Worksheet
Reviews all skills in the unit. A great take home sheet. Also provides a practice problem.
Standard: MATH 4
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10 problems that test the addition of units of time and weight skills.
Standard: MATH 4
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Answers for the homework and quiz.
Answers for both lessons and both practice sheets.

Learning Measurements by using your Kitchen
If you want to learn or teach measurements, the best place to do so is in the kitchen.
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What Systems of Measurement Are Used Throughout the World?
By the end of eighteenth century, throughout the world, people have frequently used a range of different units and systems of measurement.
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