CLASS 6 · LEARNING KNOWLEDGE
Integers and number line
How it works
Negative numbers lie to the left of zero. Subtraction corresponds to adding the opposite number. For temperature or altitude changes, the sign indicates the direction.
Note
a−b=a+(−b); Distance between two numbers=|a−b|.
a−b=a+(−b); Distance between two numbers=|a−b|.
An example
In the morning it is −4 °C. The temperature rises by 2 °C. How warm is it then? Give the result in °C.
Initial value + change = −4+2. Result: -2 °C.
Try it yourself now
50 Exercises · three difficulty levels · selection and number input
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: KMK Educational Standards Mathematics ESA/MSA. The topic assignment may vary by federal state.