i inserted a picture of the questions, you have to click on the picture to fully see all the questions.

7)
[tex]21.1+45.99+26.0=93.1[/tex]8)
[tex]15.55+21.61-12.333=49.49[/tex]9)
[tex]14+0.8+9.33=24[/tex]10)
[tex]14.5\cdot190=2755.0[/tex]11)
[tex]5.1\cdot2.5=12.7[/tex]12)
[tex]\frac{0.15}{0.991}=0.15[/tex]