Adding and subtracting positive and negative numbers
[DOC File]HARTLAND MIDDLE SCHOOL
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TAKE THE SHORTCUT When adding and subtracting integers (positive and negative numbers) there is a much easier approach. 1. Get rid of all the double signs. + + becomes + - - becomes + + - becomes – - + becomes – 2. Now look at each integer separately and combine them as if they were numbers tossed on a table.
[DOC File]Rogue Community College
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A. Ten is the number with the larger absolute value and its original sign is negative, therefore our sum is: -6. B. 4 twelve is the number with the larger absolute value and its original sign is positive, therefore our sum is: 4. Rules for Subtracting Integers. Change the problem to its additive inverse (Cha-ching!)
[DOC File]Using Manipulatives to develop the rules for adding and ...
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Adding and Subtracting Negative Numbers Hours 1 Aims This lesson unit is intended to help students to: Add and subtract directed numbers (positive, negative and zero) with understanding. Address common misconceptions about the addition and subtraction of directed numbers. Explain their reasoning using diagrams. Pedagogy Fluency Activity (details)
[DOC File]Guided notes: Scientific notation
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Adding and Subtracting Integers with 2-Color Counters . Model Lesson Using Manipulatives. Objective: The student will be able to add and subtract integers using 2-color counters and using pencil sketches of color counters. Before the Lesson: Students can compare positive and negative numbers …
Adding and Subtracting Negative Numbers Worksheets
Here is your cheat sheet to help you remember what to do with positive and negative numbers (integers) when adding, subtracting, multiplying or dividing. Adding Rules: SAME SIGN SUM (if they have the same sign, add the #’s together) DIFFERENT SIGN DIFFERENCE (if different signs, find difference of #’s and.
[DOC File]POSITIVE AND NEGATIVE INTEGERS
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“Adding positive and negative numbers” and “Subtracting positive and negative numbers” Manipulatives: counters to represent +1 and ─1. You could use poker chips in two colours, or squares of card in two colours, or squares marked + and ─ . Each team of students will need about 15 positive counters and 15 negative counters. Optional:
[DOC File]Here is your cheat sheet to help you remember what to do ...
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(positive & negative whole numbers) 1. Song to help you remember how to add and subtract integers: Same signs, add and keep. Different signs subtract. Keep the sign of the bigger # And then you’ll be exact! (Sung to “Row, row, row your boat”) 2. KOOL to change a subtraction sentence into addition: K O O L. e p p e. e p p t’
[DOC File]Year 7Spring (1) NUMBER LINE
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Adding and Subtracting. When adding or subtracting signed numbers, think about winning or losing money: a positive number means winning. a negative number OR subtracting a positive number means losing. Examples:-3 + 8 = 5 (lost $3, won $8; outcome: won $5)-4 + (–7) = -11 (lost $4, lost $7 more; outcome: lost $11)
[DOC File]Strategies for Adding & Subtracting Integers
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A. Rules for Adding Positive and Negative Numbers. To add two positive numbers, add and keep the positive sign. Example: (+6) + (+7) = +13. To add two negative numbers, add and keep the negative sign. Example: (-13) + (-24) = -37. To add numbers with different signs, find the difference between the two numbers (subtract) and give the answer the ...
[DOC File]Rules for Adding, Subtracting, Multiplying, and Dividing ...
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ADDING or SUBTRACTING in scientific notation. 1. First make sure that the numbers are written in the same form (have the same exponent) 3.2 x 103 + 40 x 102 (change to 4.0 x 103) Add (or subtract) first part of exponent (mantissas) 3.2 + 4.0 = 7.2. The rest of the exponent remains the same. Answer: 7.2 x 103. How do you make the exponents the same?
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