Question

Guys please help me

Answer 1

first one minus 12 each time

second one add 2/4 each time

third one add the answer by it self

forth one it's add 0.4 each time

Explanation:

1. 52-12=40 40-12=28 so -12

2. 3/4-1/4= 2/4 so 2/4

3. 2+2=4 4+4=8

4. 1.5-1.1=0.4