We love the number 5! Did you know that 5 is a "Friendly Number"? Friendly Numbers are numbers we can use when counting, adding, subtracting and more. They are numbers that are easy to count up from or count down from. When we need to add 5 + 2, we can just count up from 5. We know it is 5 without re-counting and we look for this number to make our math work easier. We can also break numbers into parts using 5 - 6 is 5 + 1, 8 is 5 + 3. Take a look at these math journals using 5 as a starting number and counting on.
We are always looking for ways we can solve problems more efficiently. Identifying and using 5 is one way we can do this. As this student says...
"Thikabadet!" (Think about it!)
Stay tuned for our other "Friendly Number", 10!