DIVIDING INTEGERS The University of Texas at Dallas.

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DIVIDING INTEGERS The University of Texas at Dallas

Student Expectations 7th Grade: 7.1.2C Use models, such as concrete objects, pictorial models, and number lines, to add, subtract, multiply, and divide integers and connect the actions to algorithms. The University of Texas at Dallas

Divide 12 yellow tiles into 3 equal groups DIVISION Use tiles to model +12 ÷ +3 = ? 4 yellow tiles in each group. Divide 12 yellow tiles into 3 equal groups +12 ÷ +3 = +4 The University of Texas at Dallas

Divide -15 into 5 equal groups DIVISION Use tiles to model -15 ÷ +5 =? Divide -15 into 5 equal groups -15 ÷ +5 = -3 The University of Texas at Dallas

DIVISION Write the fact family -4 x +2 = -8 Compare your answer. -8 ÷ +2 = -4 -8 ÷ -4 = +2 The University of Texas at Dallas

DIVISION Now try these! Use red and yellow tiles to find each answer. 1) -2 + -8 5) +3 x -4 2) +6 + -4 6) -5 x -2 3) -5 - +4 7) -12 ÷ +6 4) -6 - -7 8) -8 ÷ +2 ANSWER The University of Texas at Dallas

DIVISION 1) -2 + -8 = -10 2) +6 + -4 = +2 The University of Texas at Dallas

DIVISION 3) -5 - +4 = -9 4) -6 - -7 = +1 The University of Texas at Dallas

5 groups of the opposite of -2 DIVISION 5) +3 x -4 = -12 6) -5 x -2 = +10 5 groups of the opposite of -2 The University of Texas at Dallas

DIVISION 7) -12 ÷ +6 = -2 8) -8 ÷ +2 = -4 -12 divided into 6 equal groups 7) -12 ÷ +6 = -2 8) -8 ÷ +2 = -4 -8 divided into 2 equal groups The University of Texas at Dallas