I don't have an idea about the 1st one but second one goes by subtracting 1/3
subtract 1/3 from 8 1/3 it's 8, subtract 1/4 from 8 it's 7 2/3. figuring out the patterns are simple most of the time bu you can get stuck sometimes, if you wanna get better, practice...
40% of 250 is 250 × 40/100 = 25 × 4 = 10
Answer:
4
Step-by-step explanation:
(3 × 14) × 3 = 126
7 × 18 = 126