1) 6 - (-5) a) -11 b) 1 c) 11 d) -1 2) 4 - (-3) a) 7 b) -7 c) 1 d) -1 3) 6 - (-3) a) -9 b) 3 c) -3 d) 9 4) 8 - (-2) a) -10 b) 10 c) - 6 d) 6 5) 0 - (-7) a) - 7 b) 0 c) 7 6) Which of these calculations are equivalent? a) 5 - (-2) b) 5 + 2 c) - 5 - 2 d) 5 - 2 7) Which of these calculations are equivalent? a) 4 + 2 b) - 4 + 2 c) - 4 - (-2) d) - 4 - 2 8) (-2) - (-7) a) -5 b) -9 c) 5 d) 9 9) 3 - (-3) a) 0 b) -3 c) 6 d) -6 10) 5 - (?) = 11 a) 6 b) -6 11) 7 - (?) = 10 a) 3 b) 4 c) -3 d) -2 12) - 9 - (?) = - 2 - 4 a) -6 b) -3 c) 6 d) 3

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