The best way to measure a volume of this size in Liters. This is a metric unit. There are 1000 liters in one cubic meter.
We must multiply and divide before adding and subtracting here. Working from left to right, we get:
8 + 15 - 5 = ?
8 + 10 = ?
18 (answer)
I believe question 3 is B and question 4 is B
