Level 1 maths Skills 3847: Unit 310 Number: Positive and negative numbers Name: The contents of this worksheet‚ when correctly completed‚ cover all criteria attached to Unit 310. Calculators may not be used unless the question states that you should use one. Date of completion: (DD/MM/YYYY) The copyright in this Unit Assignment is owned by learndirect Limited and has been compiled using resources provided by learndirect and City and Guilds. © learndirect Limited June 2013. All rights
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A HIGHLY qualified student‚ with a 3.95 unweighted grade point average and 2300 on the SAT‚ was not among the top-ranked engineering applicants to the University of California‚ Berkeley. He had perfect 800s on his subject tests in math and chemistry‚ a score of 5 on five Advanced Placement exams‚ musical talent and‚ in one of two personal statements‚ had written a loving tribute to his parents‚ who had emigrated from India. Enlarge This Image Brian Cronin for The New York Times Related Go
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The negative of a negative is the opposite positive number. That is‚ for real numbers‚ -(-a) = +a Here’s how to add two positive integers: 4 + 7 = ? If you start at positive four on the number line and move seven units to the right‚ you end up at positive eleven. Also‚ these integers have the same sign‚ so you can just keep the sign and add their absolute values‚ to get the same answer‚ positive eleven. Here’s how to add two negative integers: -4 + (-8) = ? If you start at negative four
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numbers are the numbers used for counting. Example: 1‚ 2‚ 3‚ 4‚ 5… -Negative Numbers. ( ) Then man thought about numbers between 0 and 1. To give us fractions and decimals. Example: -Whole Numbers. ( ) Whole numbers are the natural numbers and 0. Example: …-3‚ -2‚ -1‚ 0‚ 1‚ 2‚ 3.. -Integers. The integers are the naturals numbers (also called positive integres)‚ their opposites (also called negative integers)‚ and zero. -Rational numbers. Rational numbers are all
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Basic’ level in most subjects‚ especially in Math. However‚ with the given opportunity to teach a math concept‚ I embraced it and learned from every aspect of the experience. During previous lessons‚ the students had learned about positive and negative integers. Using concrete and realistic situations‚ the students were able to understand the concept and were now ready to learn about adding and subtracting integers using algebra tiles. This would eventually allow the students to be able to solve
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natural numbers. Addition of Negative Integers Consider the addition of (–2) + (–3). The plus sign‚ +‚ tells us to face the positive direction. So‚ to evaluate (–2) + (–3)‚ start at –2‚ face the positive direction and move 3 units backwards. Note: We can write (–2) + (–3) as –2 + –3 Subtracting a Positive Integer from a Negative Integer Consider the value of (–2) – (3). The minus sign‚ –‚ tells us to face the negative direction. So‚ to evaluate (–2) –
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Lecture 7 – Two-Way Slabs Two-way slabs have tension reinforcing spanning in BOTH directions‚ and may take the general form of one of the following: Types of Two-Way Slab Systems Lecture 7 – Page 1 of 13 The following Table may be used to determine minimum thickness of various twoway slabs based on deflection: Minimum Suggested Thickness “h” for Two-Way Slabs Two-Way Slab System: Minimum Thickness h: Flat plate Ln/30 Flat plate with spandrel beams Ln/33 Flat slab Ln/33 Flat slab with spandrel
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THE REAL NUMBER SYSTEM The real number system evolved over time by expanding the notion of what we mean by the word “number.” At first‚ “number” meant something you could count‚ like how many sheep a farmer owns. These are called the natural numbers‚ or sometimes the counting numbers. Natural Numbers or “Counting Numbers” 1‚ 2‚ 3‚ 4‚ 5‚ . . . * The use of three dots at the end of the list is a common mathematical notation to indicate that the list keeps going forever. At some point‚ the
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HOW TO USE A SCIENTIFIC CALCULATOR How to use a Scientific Calculator: entering expression‚ angle measure‚ number formats‚ arithmetic operators‚ positive numbers‚ negative numbers‚ scientific notation‚ parentheses‚ chemical formulae‚ physical constants. Entering expression Type your expression directly onto the input line or copy and paste an expression from another programs. When you finish entering your expression‚ pres ENTER or click [=] button. Spaces are irrelevant‚ for example 54 + 3*2
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with or without their sign. Sometimes we put a positive integer with its sign in parentheses to emphasize that it represents a positive number. Example 1: 5 = +5 = (+5) Negative integers must be written with their sign. We often put a the negative integer with its sign in parentheses to emphasize that it represents a negative number. Example 2: -5 = (-5) The absolute value of a number is its distance on the number line from zero. The absolute value of a number is always positive. Example 3:
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