2.
\(3\frac15=3.2\\ 3\frac13=3.33333...\)
\(3.19, \ \ \ 3\frac15, \ \ \ 3.3, \ \ \ 3\frac13\)
3.
\(20\%\cdot1500\$=0.2\cdot1500\$=300\$\)
4.
\(\frac{600g}{3kg}=\frac{600g}{3000g}=\frac{600g}{5\cdot600g}=\frac15\)
This fraction is \(\frac15\)
5.
\(10^3+10^2+10+1=1000+100+10+1=1111\)
6. \(6.7\cdot5\$=33.5\$\)
7.
\(180-40\%\cdot180=180-0.4\cdot180=180-72=108\)
8.
\(9^2-4\cdot9=81-36=45\)
9.
from 8.45am to 12.45pm - 4 hours
\(\$15\cdot4=\$60\)
I earn \(\$60\)
10.
48 minutes = 1 hour - 12 min
21.15 - 1 hour = 20.15
20.15 + 12 min = 20.27
11.
\(34.1^oC-27.6^oC=6.5^oC\)
12.
\(8\frac14 \ h= 8h \ 15min\)
\(10.30pm+8h = 6.30am\\ 6.30am+15min = \boxed{6.45am}\)
I get up at 6.45am
13.
\(12\cdot108=1296\)
14.
\(\overline{x}=\frac{8.2+9.4+3.5+2.9}4=\frac{24}4=6\)
15.
\(48\cdot26=1248 \ \ \ - \ \ \ total \ amount \ of \ lolipops \ in \ 48 \ bags\\ 1248\cdot20g=24960g = \boxed{24.96kg} \ \ \ - \ \ \ total \ weight \ of \ the \ 48 \ bags\\\)
