multiply
verb [ I or T ]
uk/ˈmʌltɪplaɪ/ usto increase a lot in number or to make something do this:
Lawsuits against big drugs companies have multiplied in recent years.
According to Peruvian authorities, chemical fertilizers are multiplying coca leaf production by up to 1,000% per hectare.
if you multiply a number, you add another number to it a particular number of times:
multiply sth by 6/50/120, etc. Multiply your income by 3 to get a rough idea of what size of mortgage you can apply for.
be multiplied by 6/50/120, etc. The total figure must be multiplied by 75% to produce the amount paid out to investors.
They learn how to add, subtract, divide, and multiply.