Please help me with this homework help me with 1,2,3,4,5 show me the steps and the answers please I really need help with this homework

Answer:
1) KE
= 3×3 or 3×2 or 10×3 or 10×2
= 9 or 6 or 30 or 20
Step-by-step explanation:
the numbers in the brackets are what the letters stand for, so what i did for number 1 u basically do for the others so like K×E etc.