What is 4x21=
How old are you? I mean, seriously! It's eighty four. Oops.... Who knows, you might not be able to read this anyway!!
84 wow try using a calculator?!!!?
84.. And really??
it is 4-get a calculator
it is 84
I wonder *troll face*
10 year old alert!
idk ill ask my teacher XD
use. a. calculator.
Look at adhd9998's answer and its 84
84. You should really buy a calculator
1 word: calculator. Seriously....this is completely....oh my gosh. No offense, but you're obviously under the age of the Ask.com requirements.
if you dont have a calculator and you dont understand simple math then here is an easy way to figure this problem out. 4x21 essentially means add 21+21+21+21 = 42+42= 84
Eighty-Four Buy a calculator if not then 21+21+21+21/42+42 simple as dat
I'ts over 9000!!!!!!!!!
Its 84 don't listen to these mean people i just learned this and i'm only in 7th grade!
84 man there are lots of mean people if you don't have something good to say don't write anything
Instead of waiting for people to answer your question just use a calculator or if you dont have one go on the online calculator.
come on 84
Even though I feel as if this question was posted for no good reason at all...the answer is 84
84 get a calculator seriously......
84.. no offense or anything but what grade are you in?
Idk 2!. Jk it's 84 ,duh!
21x484answer is 84