Yessssssssssssssssjsahahhaahahha
Do you just need to simplify?
Answer:
The Base-10 system.
Step-by-step explanation:
our everyday number system is a Base-10 system. • the Base-10 number system is known as the decimal system. and has 10 digits to show all numbers. 0,1,2,3,4,5,6,7,8,9. using place value and a decimal point to separate.
2 tens is 20 1 one is 1
so 21 times 10 is 210