Give the number of significant figures in each number. Do at least half of the problems. Do as many more as you need to practice, but * indicates a required problem.

*a) 5000

b) 1.56

c) 92 *d) 630 e) 90100 f) 40.7
*g) 0.0001 *h) 0.0250 i) 0.0607 j) 300.5 *k) 0.0450 *l) 20.690
*m) 140700 n) 2300 *o) 0.008900 *p) 6.020 q) 20030 r) 40
*s) a *t) a u) 4001 *v) 800.0 *w) 0.012 x) 0.0100

Round off each of the following values to three significant figures

*aa) 72.65 *ab) 14736 ac) 0.00257 *ad) 0.0030555 ae) 647249 *af) 2.9999
*ag) 6 ah) 14.96 *ai) 2996374      

Do the following arithmetic

ba) add (in m)
 a
*bb) add (in g)
 a
*bc) add (in s)
 a
*bd) 67.6 x 1.30 = *be) 41320/9.36 = *bf) 0.0572 x 1563 =
*bg) 9.36/3.12 = *bh) 0.030 x 5208 = bi) 4.300/132.7 =

last modified 5-30-10