Question

1. which shows the estimate of 549 - 210 by rounding to the nearest ten, and then the correct difference? 3.ns0.2.1

a 330; 338
b 330; 328
c 340; 339
d 340; 329

Explanation:

Step1: Round 549 to nearest ten

$549
ightarrow 550$

Step2: Round 210 to nearest ten

$210
ightarrow 210$

Step3: Calculate estimated difference

$550 - 210 = 340$

Step4: Calculate exact difference

$549 - 210 = 339$

Answer:

C. 340; 339