When you mean estimate do you mean by rounding the first numbers?
$ 8.50 because if you said half and if your do 8.50-4.50 =4.50 so just reverse it 4.50 + 4.50 = 8.50
Answer:
10+5=15 +5=10-5-2=3×2=6×3=9
Answer:
press control u on ur google forms quiz than scroll all the way down to the questions and the answer should be right next to them.