Question

A rectangular room measures 3.8 meters in length and 4.9 meters in width. Jana multiplies both numbers together. Which expression would be best for her to use to check the reasonableness of her decimal multiplication? O 3x4 O 3x5 O 4x4 O 4x5​

Answer 1

Answer:4x5

Explanation:

if you round 3.8 to 4 and 4.9 to 5 then multiply that gives u 20