Integer Operations

Edpuzzle Video Lesson What are the rules to adding integers? Different Signs or Same Signs? Sort the expressions. Click each expression and pick the correct category. Same sign add and keep 5 + 3 -4 + -9 23 + 67 -14 + -16 -19 + -3 Different signs subtract -9 + 4 3 + -7 25 + -14 -18 + 33 -5 + 20 Can you solve? Solve the following adding integer problems. -19 + -3 -22 -5 + 20 15 5 + 3 8 -4 + -9 -13 -18 + 33 15 23 + 67 90 25 + -14 11 -14 + -16 -30 3 + -7 -4 -9 + 4 -5 Edpuzzle Video Lesson Do you remember how to subtract integers? Which expressions are equivalent? Match the expressions that are equivalent. Remember - keep, change, change -4 - 6 -4 + -6 9 - (-12) 9 + 12 -13 - (-14) -13 + 14 25 - 32 25 + -32 37 - (-7) 37 + 7 -22 - (-2) -22 + 2 -55 - 15 -55 + (-15) -4 - 6 = -10 2 10 -2 9 - (-12) = -21 3 21 -3 -13 - (-14) = -1 1 27 -27 25 - 32 = -7 57 7 -57 37 - (-7) = -44 -30 30 44 -22 - (-2) = 24 -20 20 -24 -55 - 15 = 70 -40 40 -70 Edpuzzle Video Lesson What's the sign when you multiply or divide? Will your answer be positive or negative? Sort the expressions to either a positive answer or negative answer. Positive Answer 4 x 5 20 x 12 -14 x -10 -13 x -4 -22 ÷ -2 35 ÷ 7 -50 ÷ -10 12 ÷ 6 Negative Answer - 4 x 5 20 x -12 14 x -10 4 x -13 22 ÷ -2 -35 ÷ 7 50 ÷ -10 -12 ÷ 6 Can you multiply and divide? Pick the correct answer fro each expression. 4 x 5 = 20 20 x -12 = -240 14 x -10 = -140 -13 x -4 = 52 -35 ÷ 7 = -5 -22 ÷ -2 = 11 50 ÷ -10 = -5 -12 ÷ -6 = 2 -35 ÷ -7 5 -20 x -12 = 240 -4 x 5 = -20 14 x 10 = 140 -13 x 4 = -52