Multiply: $2.4\times 10$

When a decimal number is multiplied by 10, 100 or 1000, the digits in the product are the same as in the decimal number but the decimal point in the product is shifted to the right by as many places as there are zeros over one.

Therefore,

$2.4\times 10=24$

Here we multiplied the number 24 by 10 so we move the decimal point one place to the right.