Question

The product of 0.031 and 1,000,000 is ___ because the decimal point in 0.031 moves ___ places to the right. (The answers are 310, 3,100, 31,000, and 310,000 for the first one. For the second one it is 4-7 (4,5,6,7).)

Answer 1

The product of 0.031 and 1,000,000 is 31,000.

Because the decimal point in 0.031 moves 3 places to the right.

Solution:

Given numbers are 0.031 and 1,000,000.

To find the product of the numbers:

The product of 0.031 and 1,000,000

             = 0.031 × 1,000,000

             = 31000.000

             = 31,000

The product of 0.031 and 1,000,000 is 31,000.

Because the decimal point in 0.031 moves 3 places to the right.

Note:

The number of digits after the decimal point is 3, so the digits move 3 places to the right after the product.