Race Car IntegersRace Car Integers

October 18, 2013October 18, 2013

Race Car RulesRace Car Rules

Positive numbers mean “forward”

Negative numbers mean “reverse”

Add means “keep going” Subtract means “turn around”

Positive numbers mean “forward”

Negative numbers mean “reverse”

Add means “keep going” Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + 4 Example: 3 + 4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + 4 Example: 3 + 4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + 4 = 7 Example: 3 + 4 = 7

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + –4 Example: 3 + –4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + –4 Example: 3 + –4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 + –4 = –1 Example: 3 + –4 = –1

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – 4 Example: 3 – 4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – 4 Example: 3 – 4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – 4 Example: 3 – 4

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – 4 = –1 Example: 3 – 4 = –1

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – (–4) Example: 3 – (–4)

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – (–4) Example: 3 – (–4)

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – (–4) Example: 3 – (–4)

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 3 – (–4) = 7 Example: 3 – (–4) = 7

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: 5 – (–2) = ? Example: 5 – (–2) = ?

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: –5 – (–2) = ? Example: –5 – (–2) = ?

–15 –10 –5 0 5 10 15

-3

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

Example: –5 – 2 = ? Example: –5 – 2 = ?

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”

Race Car RulesRace Car Rules

–15 –10 –5 0 5 10 15

Positive numbers mean “forward”Negative numbers mean “reverse”Add means “keep going”Subtract means “turn around”