Question

write the base - ten number for eighty - seven.

Explanation:

Step1: Understand base - ten number

Base - ten number is the common decimal number system we use. Eighty - seven in words means 8 tens and 7 ones.

Step2: Calculate the value

$8\times10 + 7\times1=80 + 7$.
$80+7 = 87$.

Answer:

87