60
3x20=60
4x15=60
15x4=60
Always try to start off by finding the multiples of the largest number first. It's easier to find if the smaller numbers then go into the multiple after.
3x20=60
4x15=60
15x4=60
Always try to start off by finding the multiples of the largest number first. It's easier to find if the smaller numbers then go into the multiple after.