Question

between the time Mary woke up and lunchtime, the temperature rose by 11. Then by the time he went to bed, the temperature dropped by 14. Write an addition expression for the temperature relative to when Mary woke up. Draw a model using integer chips and circle the zero pairs

Answer 1

see below

Explanation:

the temperature rose by 11. +11

the temperature dropped by 14 - 14

Let t = temperature

The expression is

t + 11 -14

Let x be positive chips and y be negative chips

xxxxx xxxxx x

yyyyy yyyyy yyyy

The result is -3

t-3