1) How many SD's?
a) 5.7 = 2 SD
b) 235.12 = 5 SD
c) 8.07 = 3 SD
d) 0.0032 = 2 SD
e) 0.0150 = 3 SD
f) 1.39x10^5 = 3 SD
g) 15.200 = 5SD
h) 1070 = 3 SD
2) Calculations - Please check the SDs
a) 15.3 + 25.03
= 40.33
= 40.3
b) 1200 + 63
= 1263
= 1300
c) 4.78 - 1.2
= 3.58
= 3.6
d) 243.1 + 15.2 + 3.75
= 262.05
= 262.1
e) 0.00170 + 0.02561
= 0.02731
= 0.0273
f) 4.0 - 3.99
= 0.01....
g) 2.7x82.7
= 223.29
= 220
h) 1074x3.21
= 3447.54
= 345
i) 0.022 x 9.7
= 0.2134
= 0.21
j) 0.0220 x 9.70
= 0.2134
= 0.213
k) 23.5/2.0
= 11.75
= 10
l) 0.1735/23
= 0.00754
= 0.0075
m) 18.2 x 27.9 x 1.3
= 660.114
= 660
n) 6.7x2.73/14.74
= 1.240
= 1.24
3) What units would result?
a) cm/s x s
= cm
b) m^2/s
=
c) m/s^2 x s
= m/s
d) m/s / s
=
e)g/cm^3
=
f) kg/m^2 / m
=
3 answers
3. the answers shown are correct, but several are blank.