# 27 14 27 14 14 27 14 13 13 14 x 684 66 label each of

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| - 27 + 14| 27 + 14 = 14 27 14 13 13 - + = - = 14 X 684 66 Label each of the following statements as true or false. | -8| + |3| = | -8 + 3| 8 + 3 = 8 + 3 True TRUE X

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? 8 3 8 3 8 3 8 3 11 and 8 3 5 5 False - + = - + - + = + = - + = - = 684 72 Jean deposited a check for \$625, wrote two checks, one for \$68.74 and one for \$29.95, and used her debit card to pay for a purchase of \$57.65. How has her account balance changed? \$625 – \$68.74 – \$29.95 – \$57.65 = \$468.66 \$468.66 689 44 Subtract. -5.6 – (-2.6) -5.6 + 2.6 = -3 1 5 2 8 Since subtracting a negative is the same as addition we get: 1 5 + 2 8 No we have to get the LCD of 2, and 8. This would be . Since it is the least number in common to both. 1 4 4 5 2 8 - - - - - + = - 4 5 8 8 4 5 1 8 8 + = - + = -3 X 689 48 Subtract. -3.4 – (-7.6) -3.4 +7.6 = 4.2 4.2 689 54 The lowest temperature ever recorded in the state of Oregon was -54°F (in Seneca, on February 10, 1933). The state’s record high temperature occurred in Pendleton on August 10, 1898, when it reached 119°F. What is the historical temperature range in the state of Oregon? -54 °F +119 °F = 65 °F Since we are finding the distance between two values, we subtract. See example 3 on page 686. 65 °F X
119 ( 54 ) 119 54 173 F F F F F ° - - ° ° + ° ° 700 70 Multiply. (-3)(-6) + (4)(-2) 18 + -8 = -10 (-3)(-6) (4)(-2) 18 (-8) 18 8 10 + + - -10 X 700 80 Multiply. (-3) 3 - (-8)(-2) -27 + (-16) = -43 -43 701 82 Multiply. 2 2 ( 8) - (-4) - 64 – 16 = 48 2 2 ( 6) 4 ( 6)( 6) (4)(4) 36 16 20 - - - - - - 48 X 701 88 Multiply.

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