Which statement best dYou can use estimation to find the product of two decimals by rounding both the decimals to the nearest tenth or ten places (depending on how long it is) and then multiplying the decimals. For example, if you have 4.6 and 8.9, you have to round 4.6 and 8.9. You round the 4.6 up to 5 because the 6 bump the 4 up to 5) and then round 8.9 to 9 (because the 9 bumps the 8 up to 8.) then, multiply 5 and 9 and you get 45.escribes the expression fraction 1 over 2 x (14 − 6) x 6 + 4?