Mathematics 4024 · O Level · The four operations

The four operations — practice question

At midday, the temperature reads $-2\degree\text{C}$. By 6 pm, it has risen to $4\degree\text{C}$.
(a)[1]

Find the amount by which these temperatures differ.

(b)[1]

At midnight, the temperature is $9\degree\text{C}$ below the temperature at midday. Find the temperature at midnight.

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