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IWBAT compare and order positive and negative numbers. Numbers get larger from left to right. IWBAT add and subtract integers. Adding two positive numbers (Normal adding) *Integers without a sign are positive Adding two negative numbers (Normal adding but answer is negative) Adding Integers Adding a positive and a negative number (Subtract numbers and take the number with the larger absolute value Absolute Value – The number of spaces an integer is away from zero. 1) 2 + -7 7-2 2) 5 + 3 8 3) -4 + -8 4) 9 + -5 4+8 9-5 5 12 4 -5 -12 *A negative sign is the same as subtraction 9 + -5 = 9 - 5 5) -12 + 2 12 - 2 10 -10 1 Convert into addition problem 2 If just subtraction sign, squeeze in an addition sign to the left. 3 If subtraction sign AND negative (double negative), merge to make an addition sign. 1) -3 - 7 2) 1 - -8 3) -7 - -7 -3 + -7 1+8 -7 + 7 3+7 9 10 0 -10 4) 5 - -5 5) 8 - 10 6) 0 - 7 5+5 8 + -10 0 + -7 10 -2 -7 IWBAT multiply and divide integers Positive ×/÷ Positive = Positive Negative ×/÷ Negative = Positive Positive ×/÷ Negative = Negative Negative ×/÷ Positive = Negative Same sign = positive Different sign = negative 1) 4 ∙ −1 2) 5 ∙ 11 4 3) −9 ∙ −3 55 27 −4 5) −60 ÷ −4 15 4) −20 ÷ 4 5 −5 6) −15 5 −3 7) −48 −12 4 IWBAT write and evaluate algebraic expressions with integers Algebraic Expression – a math sentence that contain a variable but does not have an equal sign Input Table – A table that gives you numbers to input (substitute) and results in a patterned output n 5 – 3n 2 -1 -4 1) 5 – 3(2) 5–6 -1 2) 5 – 3(-1) 5 – (-3) 5+3 8 3) 5 – 3(-4) 5 – (-12) 5 + 12 17 n 5 – 3n 2 -1 -1 8 -4 17 x 2x -1 0 2 1) 2(-1) -2 2) 2(0) 0 3) 2(2) 4 x 2x -1 -2 0 0 2 2 x 3x - 2 2 -2 -3 1) 3(2) - 2 6–2 4 2) 3(-2) - 2 -6 – 2 -6 + -2 -8 3) 3(-3) - 2 -9 – 2 -9 + -2 -11 x 3x - 2 2 4 -2 -8 -3 -11