You don't. You need at least two numbers to find a GCF.
The GCF is 70.The GCF is 70.
70
the answer is 49
The GCF is 70.
The highest common factor of the numbers 490 and 630 is 70.
HCF(140, 490) = 70 So 70 and any factor of 70 will do.
hcf(490, 1750) = 70 Using factorisation: 490 = 2 x 5 x 7² 1750 = 2 x 5³ x 7 hcf = 2 x 5 x 7 = 70
490 = 490
490
Factor them both. 2 x 5 x 7 x 7 = 490 2 x 2 x 2 x 5 x 7 + 280 Find the factors in common. 2 x 5 x 7 = 70, the HCF
90% of 490 = 90% * 490 = 0.9 * 490 = 441
25% of 490= 25% * 490= 0.25 * 490= 122.5