CLASS 5 · LEARNING KNOWLEDGE
Order and Arithmetic Laws
How it works
Parentheses are calculated first. Then multiplication and division follow, lastly addition and subtraction. Operations of equal rank are performed from left to right. The distributive law allows expansion.
Note
Parentheses before multiplication before addition; a·(b+c)=a·b+a·c.
Parentheses before multiplication before addition; a·(b+c)=a·b+a·c.
An example
Calculate 4 + 6 · 7. Give only the requested number.
Point before line: first 6 · 7 = 42, then 4 + 42. Result: 46.
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.