Question

1. t + 27 = 21

t = –6
t = 47
t = 6
t = –47

2. 24 = m – 32

m = –8
m = 56
m = 768
m = –56

3. Tamara has eaten 1,400 calories for breakfast and lunch. She has 800 more calories, c, that she can eat for dinner.
Write and solve an equation to find Tamara’s daily caloric intake.

1,400 – 800 = c; c = 600
1,400 + 800 = c; c = 2,200
1,400 – c = 800; c = 2,200
1,400 + 800 = c; c = 600

4. Steven’s old cell phone cost $125.00 less than his new phone. His old cell phone cost $155.00.
Write and solve an equation to find the cost of Steven’s new cell phone.

n – 125 = 155; n = $30
155 – 125 = n; n = $30
125 + n = 155; n = $280
n – 125 = 155; n = $280

Answer 1

What are your answers?

Answer 2

What do you think the answers are first?

I like to think of these as money.
Imagine the first one there is you had €27 in your hand, something happened to it and now you have €21. So, what happened? Was money added or taken away? How much was added or taken away?