Watch Aaryan set a new record for the fastest time to mentally add 200 four-digit numbers. Russian tanker Eco Wizard erupts in blasts, toxic ammonia leaks spark emergency The sleeper train holiday to ...

One of Aaryan Shukla's world records is for mentally adding 100 four-digit numbers in 30.9 seconds. Reading time 2 minutes Remember when your teachers used to say that mental math is important because ...