Landmark numbers
Landmark numbers are numbers that my brain knows really well and finds easy to work with. When solve problems using landmark numbers, my brain relaxes a little and feels like it can breathe a sigh of relief!
Landmark numbers can be different for different person. Most people, however, find that "decade" numbers (numbers that are a multiple of 10) are landmark numbers for their brains - places where their brains feel they are in familiar territory. This is because our number system is a base 10 system and each time we reach a "decuple" or multiple of 10, the number will end in zero, making it easier to work with for many people.
Often, we might also say things like "bridge to ten" and "bridge through ten" when referring to landmark numbers.
Landmark numbers can be different for different person. Most people, however, find that "decade" numbers (numbers that are a multiple of 10) are landmark numbers for their brains - places where their brains feel they are in familiar territory. This is because our number system is a base 10 system and each time we reach a "decuple" or multiple of 10, the number will end in zero, making it easier to work with for many people.
Often, we might also say things like "bridge to ten" and "bridge through ten" when referring to landmark numbers.