4 examples with counters 4 examples with number lines

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Presentation transcript:

4 examples with counters 4 examples with number lines Adding Integers 4 examples with counters 4 examples with number lines

Adding Integers Pictorially Use coloured counters to represent each sum. Give each result. (-2) + (-5) (-7)

Adding Integers Pictorially Use coloured counters to represent each sum. Give each result. (+6) + (-6) Identify Zeros… (0) Remove Zeros… What is left?

Adding Integers Pictorially Use coloured counters to represent each sum. Give each result. (-5) + (+4) Identify Zeros… (-1) Remove Zeros… What is left?

Adding Integers Pictorially Use coloured counters to represent each sum. Give each result. (+4) + (-2) Identify Zeros… (+2) Remove Zeros… What is left?

Adding Integers Pictorially Use a number line to add each pair of integers. Start at 0. Give each result. (+3) + (+4) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up? (+7)

Adding Integers Pictorially Use a number line to add each pair of integers. Start at 0. Give each result. (-2) + (-3) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up? (-5)

Adding Integers Pictorially Use a number line to add each pair of integers. Start at 0. Give each result. (+6) + (-4) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up? (+2)

Adding Integers Pictorially Use a number line to add each pair of integers. Start at 0. Give each result. (+5) + (-8) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up? (-3)

Try Check Your Understanding Page 208 #’s 1-13 Adding Integers Try Check Your Understanding Page 208 #’s 1-13

= +1

= -2

(+ 6) + (- 4) = (+ 2) (+ 3) + (+ 2) = (+ 5) (- 7) + (+3) = (- 4) (- 2) + (- 1) = (- 3)

(-1) + (- 3) = (- 4) (- 4) + (+ 4) = (0) (- 2) + (+6) = (+ 4) (+1) + (- 5) = (- 4)

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps a) (+2) + (+7) = (+9)

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps b) (-3) + (-5) = (-8)

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps c) (-9) + (+3) = (-6) Identify Zeros… Remove Zeros… What is left?

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps d) (-4) + (+1) = (-3) Identify Zeros… Remove Zeros… What is left?

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps e) (-2) + (+2) = (0) Identify Zeros… Remove Zeros… What is left?

#5 Use coloured counters to model each sum #5 Use coloured counters to model each sum. Draw pictures to record the steps f) (+8) + (-2) = (+6) Identify Zeros… Remove Zeros… What is left?

#6 Use a number line to model each sum = (-6) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

#6 Use a number line to model each sum = (-6) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

#6 Use a number line to model each sum = (+2) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

#6 Use a number line to model each sum = (-8) -8 Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

#6 Use a number line to model each sum = (+8) 8 Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

#6 Use a number line to model each sum f) (+6) + (-2) = (+4) Draw first integer starting at zero… Draw second integer at the end of the first… Where do you end up?

+ + - -

#8 Use mental arithmetic to find each sum. Explain your strategy. (+6) + (-5) (+1)

#8 Use mental arithmetic to find each sum. Explain your strategy. b) (+5) + (-9) (-4)

#8 Use mental arithmetic to find each sum. Explain your strategy. (-5) + (-7) (-12)

#8 Use mental arithmetic to find each sum. Explain your strategy. (-3) + (-3) (-6)

#8 Use mental arithmetic to find each sum. Explain your strategy. (-7) + (+10) (+3)

#8 Use mental arithmetic to find each sum. Explain your strategy. (-9) + (+5) (-4)

#9 Find each sum a) (+7) + (+9) (+16)

#9 Find each sum b) (+18) + (-18) (0)

#9 Find each sum c) (-14) + (+14) (0)

#9 Find each sum d) (-53) + (+55) (+2)

#9 Find each sum e) (-20) + (-20) (-40)

#9 Find each sum f) (+100) + (-105) (-5)

#10 Find each sum using any method (-2) + (-3) + (-5) (-10)

#10 Find each sum using any method b) (-6) + (+4) + (+7) (+5)

#10 Find each sum using any method (+8) + (+2) + (-5) (+5)

#10 Find each sum using any method (+7) + (+6) + (-13) (0)

#10 Find each sum using any method (-10) + (-7) + (+5) (-12)

#10 Find each sum using any method (-21) + (+17) + (-16) (-20)

#10 Find each sum using any method (+15) + (-5) + (+18) (+28)

#10 Find each sum using any method (-3) + (-4) + (+29) (+22)

Let’s practice everything with an assignment! Adding Integers Let’s practice everything with an assignment!