Solve -2.3+28+97+15.2+18.4+19.7+11.1+15.3+9.4+3.6+0.1=

$$- 2.3 + 28 + 97 + 15.2 + 18.4 + 19.7 + 11.1 + 15.3 + 9.4 + 3.6 + 0.1 =$$

Evaluate

$$215.5$$

Solution Steps

Add -2.3 and 28 to get 25.7.

$$25.7+97+15.2+18.4+19.7+11.1+15.3+9.4+3.6+0.1$$

Add 25.7 and 97 to get 122.7.

$$122.7+15.2+18.4+19.7+11.1+15.3+9.4+3.6+0.1$$

Add 122.7 and 15.2 to get 137.9.

$$137.9+18.4+19.7+11.1+15.3+9.4+3.6+0.1$$

Add 137.9 and 18.4 to get 156.3.

$$156.3+19.7+11.1+15.3+9.4+3.6+0.1$$

Add 156.3 and 19.7 to get 176.

$$176+11.1+15.3+9.4+3.6+0.1$$

Add 176 and 11.1 to get 187.1.

$$187.1+15.3+9.4+3.6+0.1$$

Add 187.1 and 15.3 to get 202.4.

$$202.4+9.4+3.6+0.1$$

Add 202.4 and 9.4 to get 211.8.

$$211.8+3.6+0.1$$

Add 211.8 and 3.6 to get 215.4.

$$215.4+0.1$$

Add 215.4 and 0.1 to get 215.5.

$$215.5$$

Factor

$$\frac{431}{2} = 215\frac{1}{2} = 215.5$$