There are several methods for multiplying numbers that can be faster than the way you learned in 5th grade. One method is halving and doubling, which is useful when multiplying by numbers like 5, 10, 25, 50, etc. This involves dividing one factor in half and then doubling the other factor. Another method is using factors, which involves manipulating numbers to make an equation easier to solve. Partial products is another strategy that can be used as an alternative to long multiplication. This involves setting up the equation like traditional long multiplication but using a different method of multiplying. Finally, there are tricks you can use to remember times tables such as doubling or quadrupling the number you're multiplying.
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