Question

Using front-end estimation, what is the correct estimation of the sum, 23+33+44+51+31 -
A. 180
B. 170
C. 160
D. 150

Answer 1

Answer:

if we calculate this numbers the questions will be 182 so you have incorrect number and the questions will be (A).180

Explanation:

the number (31) have a + or - for define ut more