NEGATIVE NUMBERS

Welcome to your NEGATIVE NUMBERS

What are the two numbers shown in the number line below?
Determine the correct order of the following numbers: 

-9, 10, 0, -4, -6, 19, -21

(-2) + 12 =
(-15)+(-3)=
(-5) - (-16)=
6 × (-12)=
(-10)×(-15)=
(-240)÷8=
(-84)÷(-12)=
(-24) + (16) – (-8)=
(-13) +(-6) – (-9)=
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At 5 am, the temperature at London was recorded to be -15 °C. At 12 pm, the temperature has increased by 26 °C. What is the temperature at London at 12 pm?
The roof of an apartment is 315 m above the ground level. The car park beneath the apartment is 27 m below the ground level. What is the height of the roof of the apartment from the floor of the car park?