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 Exploring Measures 40 Flashcards |
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Measures in mathematics are primarily used to ___ everyday tasks. |
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Solve problems, investigate, and manage |
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What are common examples of measures used in mathematics? |
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Length, area, perimeter, time, and quantities |
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Fill in the blank: A ruler is a tool that measures ___ of a shape. |
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Lengths  |
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True or False: A calendar is used for measuring physical quantities. |
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False. A calendar is used for tracking days, months, or schedules. |
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What is the purpose of an airport departure board? |
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It displays time and schedules for flights, aiding in time management. |
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Riddle: I keep time but can be wrong; adjust me if I'm fast or slow, what am I? |
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A clock |
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What adjustments are necessary for clocks that do not display the correct time? |
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They require adjustments based on whether they are fast or slow. |
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Short Answer: Why is measuring area important in mathematics? |
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It is essential for planning spaces and understanding the extent of surfaces. |
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Multiple Choice: Which of the following is NOT an application of measurement? A) Ruler B) Calendar C) Thermometer D) Calculator |
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D) Calculator |
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What is the formula for calculating the area of a rectangle? |
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The area of a rectangle is calculated using the formula: Area = length × width. |
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The area of a triangle formed by cutting a rectangle diagonally is calculated as ___. |
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(length × width) ÷ 2. |
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True or False: The perimeter of a shape is calculated by multiplying the length by the width. |
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False. The perimeter is the sum of all side lengths of the shape. |
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Estimate the area of a triangle with a base of 10 m and height of 5 m using the rectangle method. |
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The area of the triangle is (10 m × 5 m) ÷ 2 = 25 m². |
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What units are used for calculating perimeter? |
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Perimeter uses linear units such as mm, cm, m, km. |
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True or False: The area of a triangle can be greater than the area of the rectangle from which it is formed. |
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False. The area of a triangle formed by cutting a rectangle is always half of the rectangle's area. |
Card: 30 / 40 |
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If a rectangle has a length of 8 m and a width of 3 m, what is its area? |
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The area is 8 m × 3 m = 24 m². |
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How do you calculate the area of a rectangle formed by two squares with side length s? |
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The area of the rectangle is calculated as 2s × s, which simplifies to 2s². |
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If a square has a side length of s, what is the area of each rectangle formed by dividing it into two identical rectangles? |
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Each rectangle's area is given by s × (s/2), which simplifies to s²/2. |
Card: 36 / 40 |
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The original area of a paper measuring 21 cm by 30 cm is ___ cm². |
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The original area is calculated as 21 cm × 30 cm, which equals 630 cm². |
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True or False: If a rectangle is cut in half along its length, each piece has an area equal to half the original area. |
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True. |
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Completed! Keep practicing to master all of them. |
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