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Here are a few recommended readings before getting started with this lesson.
Outcome | Action |
---|---|
1 | Move 1 step forward |
2 | Move 2 steps backward |
3 | Move 3 steps forward |
4 | Move 4 steps backward |
5 | Move 5 steps backward |
6 | Move 6 steps forward |
The first player to reach 36 is the winner.
Addition and subtraction are two primary operations performed between two or more integers to increase or decrease their values.
Tadeo and Magdalena bought the mystery box by combining their monthly allowances. Tadeo paid $10 out of the total cost of the box and Magdalena paid only $6.
Tadeo and Magdalena take a break from unpacking the box. They are now deciding whether to play soccer or stay in the house to watch a movie in the afternoon. The kids agree that they will stay inside if the weather is colder than 62∘F (degrees Fahrenheit) in the afternoon. The current temperature is 67∘F.
Cool down
suggests a subtraction. Subtract 9 from 67 to find the expected temperature for the afternoon.
Cool downimplies subtraction — in other words, subtracting 9 degrees from the current temperature will give the temperature for later in the afternoon.
Magdalena and Tadeo spend the rest of the day watching a fantastic movie together. The movie is about a dolphin stuck in a net in the ocean. The siblings are intrigued because the main character, a kid like them, wants to save the dolphin. The kid swims 10 feet below sea level, but the dolphin is 7 feet deeper.
The siblings want to figure out how deep the dolphin is below the surface. Help them find the answer.Start by representing the main character's depth as a negative value. The seven feet further down to reach the dolphin is also negative. When adding a negative integer to another integer, change the addition sign to a subtraction sign and the negative integer added to its opposite.
Oh no! Magdalena and Tadeo were distracted by the movie and did not notice that Luna, the family pet, escaped. They must find Luna before their parents get home.
Tadeo and Magdalena live in a third-floor apartment. They decide start their search in the underground parking structure, which is a common place that Luna goes to. She particularly likes the third floor down of the parking structure, Subbasement 3.