Question

1. what is the product of 2.3 x 10^2 *

options: 23, 230, 2,300, 40.3

1. estimate the product of 4.3 x 8.8. *

options: 32, 54, 40, 36

Explanation:

Question 5

Step1: Recall scientific notation

$10^2 = 100$

Step2: Multiply by 2.3

$2.3\times100 = 230$

Step1: Round the numbers

Round 4.3 to 4 and 8.8 to 9 (or 4.3 to 4 and 8.8 to 8, but 4×9 is closer to actual product).

Step2: Calculate the estimate

$4\times9 = 36$ (or if rounding 4.3 to 4 and 8.8 to 8, $4\times8 = 32$, but 4.3×8.8 is approximately 37.84, so 36 is a better estimate)

Answer:

230 (corresponding to the option with "230")

Question 6