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Can you get 1428 by multiplying using only the numbers 1 2 6 8?
68*21=1428
What number has only these factors 1236?
Six does.
Can you get the LCM of 2 numbers by multiplying them and then dividing the answer by 2?
Only when their GCF is 2.
Can you always find the LCM for two numbers by multiplying them Why or why not?
No. You can always find a common multiple by multiplying two numbers together. It will only be the least common multiple if the numbers have no common factors other than one.
Can you make 7 using only the numbers 4 4 4?
No. By adding 4+4+4 the answer comes to 12. To subtract the answer comes to 4. By multiplying it is 64.
How many significant figures are needed when multiplying two numbers?
It depends on the number of significant figures from two numbers you are multiplying. But when multiplying you use the same number of significant figures from the numbers you are multiplying with the LEAST number of significant figures. Example: 92,873.239 * 2 = 200,000 (because the number 2 has only 1 significant figure even tho 92,873.239 has 8 significant figures your answer still only has 1 significant figure)
How many 3 digit numbers can you make using the numbers 4 6 7 and 9 only using them once in every number?
You have 4 options for the first digit, 3 for the second, 2 for the third. Multiplying all this you get 4 x 3 x 2 = 24 options.
Can two numbers have the same prime factorization?
No, multiplying a set of numbers can only come out as one product. Therefore, two numbers having the same prime factorization is impossible.
How many four digit numbers can you make using 0-9 only using each number once?
9
How do you get 4 897 by multiplying 3 prime numbers?
You only need two. 59 x 83 = 4897
What is the product of -16?
In maths the product is the result of multiplying two numbers. You have only given one so there can be no product.
Is it true that when you multiply two natural numbers the product is never less than either of the two numbers?
Yes. Natural numbers are counting numbers, equal to or greater than 0. The only ways a product can be less than its multiplicands is when multiplying fractions by fractions or multiplying a positive number by a negative number.
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