Question

estimate the sum by rounding the numbers.
Add them and then compare
Estimate
the sum with the actual sum.
(a) 7,563 + 2,356
(c) 74,632 + 23,654
(b) 6,325 +1,478
(d) 47,563 + 84,230​

Answer 1

Answer:

a. 9919

b.98286

c. 7803

d. 131793

Answer 2

Answer:

Step-by-step explanation:

Estimate the sum by rounding the numbers.  

Add them and then compare

Estimate

the sum with the actual sum.

(a) 7,563 + 2,356

(c) 74,632 + 23,654

(b) 6,325 +1,478

(d) 47,563 + 84,230​

7,563 + 2,356

= 7560 + 2360

= 9920

Actual =  7,563 + 2,356  = 9919

74,632 + 23,654

= 74630 + 23650

= 98280

Actual =  74,632 + 23,654  = 98286

6,325 +1,478

= 6330 + 1480

= 7810

Actual = 6,325 +1,478 =   7803

47,563 + 84,230

47560 + 84230

=   131790

Actual = 47563 + 84230 =   131793