2 x 6300 = 12,600 The actual answer is 12,508.
Compatible numbers would be easier. Rounding gives you 14 x 47. Compatible numbers could be 13 x 50 which would be closer to the actual product.
The answer would be an overestimate.
70 x 20 = 1400
9 x 500 = 4500 and 9 x 600 = 5400, so you know the answer will be close to halfway between those two numbers. The actual answer is 4860.
A factor multiplies with another factor to create a product.
If you are dividing the numerator and the denominator by the same number (the GCF), it is the same as dividing the fraction by 1, which will leave it unchanged and create the same product.
a product factor is an answer to an equation and the actual equation itself.