1: Look at the 4, its a lot easier to multiply 5 x 5 rather than 5 x 4, plus if you are estimating, you are going to round either up or down.
2: Multiply 5 x 5 // the answer is 25.
3: Multiply 5 x 4 (the original) // which is 20.
Answer:
5,792
Step-by-step explanation:
I'm pretty sure tell me if I'm wrong
20971520
I did 4^11 x 5 (because you could say the first one is 5 x 1 and 4^0 = 1)
What do you need ? You just showing us a pic no explanation?