Operaciones Matemáticas

-3

0

2.5

7

Zero is always at the far right of the number line.

Negative numbers are to the right of zero.

Each mark on the number line represents one unit.

The number line is a vertical line.

3°C

-7°C

7°C

-3°C

Zero is greater than any negative number.

Any negative number is greater than any positive number.

Among negative numbers, the one closer to zero is greater.

Any positive number is less than zero.

Add the absolute values and keep the sign

Subtract the smaller absolute value from the larger and keep the sign of the larger

Multiply the numbers and keep the sign

Change the sign of one number and add

A positive times a positive is negative

A negative times a negative is positive

A positive times a negative is positive

A negative times a positive is positive

-24

24

-12

12