Question

1. Estimate each of the following using general rule:
(a) 730 +998 (b) 796 - 314 (c) 12,904 +2,888 (d) 28.292 - 21,496
Make ten more such examples of addition, subtraction and estimation of their outcome.
Give a rough estimate throunding​

Answer 1

Answer:

Step-by-step explanation:

(a) 730 +998

First we round off the numbers

700+1000

After it we add,multiply,divide or subtract

so answer is

=1700

(b) 796 - 314

800-300

=500

(c) 12,904 +2,888

12000+3000

Second rule we always round off from smaller number

15000

(d) 28292 - 21,496

30000-20000

10000

The rough round off for example of the a part the number is 730 We check weather the number is equal to 5 or big then 5 so we check 730 we are round off tens place because of the rule

3 is smaller than 5 so it will round off 700 or 800 it correct answer is 700