Question

VCH
Exercise 25
1. Round off each of the following numbers to the nearest ten.
(a) 73
(C) 294
(g) 3429
(i) 12652
amr
(d)
lut
(b) 67
(e) 861
(1) 1038
6) 30607
2. Round off each of the following numbers to the nearest hundred.
(a) 346
(b) 917
(c) 493
(f) 6251
(g) 9804
6) 26816
3. Round off each of the following numbers to the nearest thousand.
(b) 7832
(c) 9567
(f) 20963
(g) 31274
(e) 5174
(0) 14627
(a) 4278
(e) 26019
(0)16278
(h)48511
stimation
estimate means to make a guess.
natie
the power to a question involving operatione​

Answer 1

The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges.