Question

se
lated sum 6000 19000 25,000
Example 17: Estimate 8672 - 425,
Solution:
86729000 (Rounding off to
nearest 1000)
425 > 0 (Rounding off to
nearest 1000)
tug9000
0
Estimated difference
9000
19 20 (Roundin
Estimated quotient 700 20 = 35
Find the actual answers of the above eram
verify if the estimate is valid
Remark: An important use of estimation is
our answers, Suppose you have multiplied
458 and are not sure about your answer
estimate of the product will be
300 - 500 -1,50,000.
ile
(c) 1873 1800
(f) 6850 →6800
EXERCISE 1.4
1. Check if the following rounding off is correct or not. Correct the wrong ones,
(a) 63 70
(b) 48 50
(d) 286 200
(e) 49,830 - 49,800
2. Estimate each of the following.
(a) 456 + 285
(b) 794-312
(d) 37,646 - 21,248
(e) 64 85
(g) 2392 x 592
(h) 97 + 24
3. Give a rough estimate (by rounding off to the nearest hundreds) and also a closer estimat
off to the nearest tens) of the following
(a) 546 +684 + 7316
(b) 1,09,834 -48,799
4. Estimate the following.
(a) Number of hours you spend in the school in a month.
(b) The total number of students in your school
(c) 14,805 + 3885
(F) 687 273
(1) 848 +39
(c) 5,69,462 + 4,7​

Answer 1

Step-by-step explanation:

2456 is ur answer.................mmmmmm

Answer 2

Answer:

thanks you all brother hi and bye